src/drivers/driver_nl80211.c

   1 /*
   2  * Driver interaction with Linux nl80211/cfg80211
   3  * Copyright (c) 2002-2010, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2003-2004, Instant802 Networks, Inc.
   5  * Copyright (c) 2005-2006, Devicescape Software, Inc.
   6  * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net>
   7  * Copyright (c) 2009, Atheros Communications
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  * Alternatively, this software may be distributed under the terms of BSD
  14  * license.
  15  *
  16  * See README and COPYING for more details.
  17  */
  18
  19 #include "includes.h"
  20 #include <sys/ioctl.h>
  21 #include <net/if_arp.h>
  22 #include <net/if.h>
  23 #include <netlink/genl/genl.h>
  24 #include <netlink/genl/family.h>
  25 #include <netlink/genl/ctrl.h>
  26 #include <netpacket/packet.h>
  27 #include <linux/filter.h>
  28 #include "nl80211_copy.h"
  29
  30 #include "common.h"
  31 #include "eloop.h"
  32 #include "common/ieee802_11_defs.h"
  33 #include "netlink.h"
  34 #include "radiotap.h"
  35 #include "radiotap_iter.h"
  36 #include "driver.h"
  37
  38 #ifdef CONFIG_LIBNL20
  39 /* libnl 2.0 compatibility code */
  40 #define nl_handle nl_sock
  41 #define nl_handle_alloc_cb nl_socket_alloc_cb
  42 #define nl_handle_destroy nl_socket_free
  43 #endif /* CONFIG_LIBNL20 */
  44
  45
  46 #ifndef IFF_LOWER_UP
  47 #define IFF_LOWER_UP   0x10000         /* driver signals L1 up         */
  48 #endif
  49 #ifndef IFF_DORMANT
  50 #define IFF_DORMANT    0x20000         /* driver signals dormant       */
  51 #endif
  52
  53 #ifndef IF_OPER_DORMANT
  54 #define IF_OPER_DORMANT 5
  55 #endif
  56 #ifndef IF_OPER_UP
  57 #define IF_OPER_UP 6
  58 #endif
  59
  60 struct i802_bss {
  61         struct i802_bss *next;
  62         int ifindex;
  63         unsigned int beacon_set:1;
  64 };
  65
  66 struct wpa_driver_nl80211_data {
  67         void *ctx;
  68         struct netlink_data *netlink;
  69         int ioctl_sock; /* socket for ioctl() use */
  70         char ifname[IFNAMSIZ + 1];
  71         int ifindex;
  72         int if_removed;
  73         struct wpa_driver_capa capa;
  74         int has_capability;
  75
  76         int operstate;
  77
  78         int scan_complete_events;
  79
  80         struct nl_handle *nl_handle;
  81         struct nl_handle *nl_handle_event;
  82         struct nl_cache *nl_cache;
  83         struct nl_cache *nl_cache_event;
  84         struct nl_cb *nl_cb;
  85         struct genl_family *nl80211;
  86
  87         u8 auth_bssid[ETH_ALEN];
  88         u8 bssid[ETH_ALEN];
  89         int associated;
  90         u8 ssid[32];
  91         size_t ssid_len;
  92         int nlmode;
  93         int ap_scan_as_station;
  94         unsigned int assoc_freq;
  95
  96         int monitor_sock;
  97         int monitor_ifidx;
  98         int probe_req_report;
  99
 100         unsigned int beacon_set:1;
 101         unsigned int pending_remain_on_chan:1;
 102
 103         u64 remain_on_chan_cookie;
 104
 105 #ifdef HOSTAPD
 106         int eapol_sock; /* socket for EAPOL frames */
 107
 108         int default_if_indices[16];
 109         int *if_indices;
 110         int num_if_indices;
 111
 112         struct i802_bss bss;
 113
 114         int last_freq;
 115         int last_freq_ht;
 116 #endif /* HOSTAPD */
 117 };
 118
 119
 120 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx,
 121                                             void *timeout_ctx);
 122 static int wpa_driver_nl80211_set_mode(void *priv, int mode);
 123 static int
 124 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv);
 125 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
 126                                    const u8 *addr, int cmd, u16 reason_code);
 127 static void nl80211_remove_monitor_interface(
 128         struct wpa_driver_nl80211_data *drv);
 129
 130 #ifdef HOSTAPD
 131 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 132 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx);
 133 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
 134                                  int ifindex);
 135 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq);
 136 static int wpa_driver_nl80211_if_remove(void *priv,
 137                                         enum wpa_driver_if_type type,
 138                                         const char *ifname);
 139 #endif /* HOSTAPD */
 140
 141 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
 142                                                         void *timeout_ctx);
 143
 144
 145 /* nl80211 code */
 146 static int ack_handler(struct nl_msg *msg, void *arg)
 147 {
 148         int *err = arg;
 149         *err = 0;
 150         return NL_STOP;
 151 }
 152
 153 static int finish_handler(struct nl_msg *msg, void *arg)
 154 {
 155         int *ret = arg;
 156         *ret = 0;
 157         return NL_SKIP;
 158 }
 159
 160 static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err,
 161                          void *arg)
 162 {
 163         int *ret = arg;
 164         *ret = err->error;
 165         return NL_SKIP;
 166 }
 167
 168
 169 static int no_seq_check(struct nl_msg *msg, void *arg)
 170 {
 171         return NL_OK;
 172 }
 173
 174
 175 static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv,
 176                               struct nl_msg *msg,
 177                               int (*valid_handler)(struct nl_msg *, void *),
 178                               void *valid_data)
 179 {
 180         struct nl_cb *cb;
 181         int err = -ENOMEM;
 182
 183         cb = nl_cb_clone(drv->nl_cb);
 184         if (!cb)
 185                 goto out;
 186
 187         err = nl_send_auto_complete(drv->nl_handle, msg);
 188         if (err < 0)
 189                 goto out;
 190
 191         err = 1;
 192
 193         nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err);
 194         nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err);
 195         nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err);
 196
 197         if (valid_handler)
 198                 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM,
 199                           valid_handler, valid_data);
 200
 201         while (err > 0)
 202                 nl_recvmsgs(drv->nl_handle, cb);
 203  out:
 204         nl_cb_put(cb);
 205         nlmsg_free(msg);
 206         return err;
 207 }
 208
 209
 210 struct family_data {
 211         const char *group;
 212         int id;
 213 };
 214
 215
 216 static int family_handler(struct nl_msg *msg, void *arg)
 217 {
 218         struct family_data *res = arg;
 219         struct nlattr *tb[CTRL_ATTR_MAX + 1];
 220         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 221         struct nlattr *mcgrp;
 222         int i;
 223
 224         nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 225                   genlmsg_attrlen(gnlh, 0), NULL);
 226         if (!tb[CTRL_ATTR_MCAST_GROUPS])
 227                 return NL_SKIP;
 228
 229         nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) {
 230                 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1];
 231                 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp),
 232                           nla_len(mcgrp), NULL);
 233                 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] ||
 234                     !tb2[CTRL_ATTR_MCAST_GRP_ID] ||
 235                     os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]),
 236                                res->group,
 237                                nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0)
 238                         continue;
 239                 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]);
 240                 break;
 241         };
 242
 243         return NL_SKIP;
 244 }
 245
 246
 247 static int nl_get_multicast_id(struct wpa_driver_nl80211_data *drv,
 248                                const char *family, const char *group)
 249 {
 250         struct nl_msg *msg;
 251         int ret = -1;
 252         struct family_data res = { group, -ENOENT };
 253
 254         msg = nlmsg_alloc();
 255         if (!msg)
 256                 return -ENOMEM;
 257         genlmsg_put(msg, 0, 0, genl_ctrl_resolve(drv->nl_handle, "nlctrl"),
 258                     0, 0, CTRL_CMD_GETFAMILY, 0);
 259         NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family);
 260
 261         ret = send_and_recv_msgs(drv, msg, family_handler, &res);
 262         msg = NULL;
 263         if (ret == 0)
 264                 ret = res.id;
 265
 266 nla_put_failure:
 267         nlmsg_free(msg);
 268         return ret;
 269 }
 270
 271
 272 static int get_ifhwaddr(struct wpa_driver_nl80211_data *drv,
 273                         const char *ifname, u8 *addr)
 274 {
 275         struct ifreq ifr;
 276
 277         os_memset(&ifr, 0, sizeof(ifr));
 278         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 279         if (ioctl(drv->ioctl_sock, SIOCGIFHWADDR, &ifr)) {
 280                 wpa_printf(MSG_ERROR, "%s: ioctl(SIOCGIFHWADDR): %d (%s)",
 281                            ifname, errno, strerror(errno));
 282                 return -1;
 283         }
 284
 285         if (ifr.ifr_hwaddr.sa_family != ARPHRD_ETHER) {
 286                 wpa_printf(MSG_ERROR, "%s: Invalid HW-addr family 0x%04x",
 287                            ifname, ifr.ifr_hwaddr.sa_family);
 288                 return -1;
 289         }
 290         os_memcpy(addr, ifr.ifr_hwaddr.sa_data, ETH_ALEN);
 291
 292         return 0;
 293 }
 294
 295
 296 static int set_ifhwaddr(struct wpa_driver_nl80211_data *drv,
 297                         const char *ifname, const u8 *addr)
 298 {
 299         struct ifreq ifr;
 300
 301         os_memset(&ifr, 0, sizeof(ifr));
 302         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 303         os_memcpy(ifr.ifr_hwaddr.sa_data, addr, ETH_ALEN);
 304         ifr.ifr_hwaddr.sa_family = ARPHRD_ETHER;
 305
 306         if (ioctl(drv->ioctl_sock, SIOCSIFHWADDR, &ifr)) {
 307                 wpa_printf(MSG_DEBUG, "%s: ioctl(SIOCSIFHWADDR): %d (%s)",
 308                            ifname, errno, strerror(errno));
 309                 return -1;
 310         }
 311
 312         return 0;
 313 }
 314
 315
 316 static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid)
 317 {
 318         struct wpa_driver_nl80211_data *drv = priv;
 319         if (!drv->associated)
 320                 return -1;
 321         os_memcpy(bssid, drv->bssid, ETH_ALEN);
 322         return 0;
 323 }
 324
 325
 326 static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid)
 327 {
 328         struct wpa_driver_nl80211_data *drv = priv;
 329         if (!drv->associated)
 330                 return -1;
 331         os_memcpy(ssid, drv->ssid, drv->ssid_len);
 332         return drv->ssid_len;
 333 }
 334
 335
 336 static void wpa_driver_nl80211_event_link(struct wpa_driver_nl80211_data *drv,
 337                                           char *buf, size_t len, int del)
 338 {
 339         union wpa_event_data event;
 340
 341         os_memset(&event, 0, sizeof(event));
 342         if (len > sizeof(event.interface_status.ifname))
 343                 len = sizeof(event.interface_status.ifname) - 1;
 344         os_memcpy(event.interface_status.ifname, buf, len);
 345         event.interface_status.ievent = del ? EVENT_INTERFACE_REMOVED :
 346                 EVENT_INTERFACE_ADDED;
 347
 348         wpa_printf(MSG_DEBUG, "RTM_%sLINK, IFLA_IFNAME: Interface '%s' %s",
 349                    del ? "DEL" : "NEW",
 350                    event.interface_status.ifname,
 351                    del ? "removed" : "added");
 352
 353         if (os_strcmp(drv->ifname, event.interface_status.ifname) == 0) {
 354                 if (del)
 355                         drv->if_removed = 1;
 356                 else
 357                         drv->if_removed = 0;
 358         }
 359
 360         wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event);
 361 }
 362
 363
 364 static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv,
 365                                          u8 *buf, size_t len)
 366 {
 367         int attrlen, rta_len;
 368         struct rtattr *attr;
 369
 370         attrlen = len;
 371         attr = (struct rtattr *) buf;
 372
 373         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 374         while (RTA_OK(attr, attrlen)) {
 375                 if (attr->rta_type == IFLA_IFNAME) {
 376                         if (os_strcmp(((char *) attr) + rta_len, drv->ifname)
 377                             == 0)
 378                                 return 1;
 379                         else
 380                                 break;
 381                 }
 382                 attr = RTA_NEXT(attr, attrlen);
 383         }
 384
 385         return 0;
 386 }
 387
 388
 389 static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv,
 390                                           int ifindex, u8 *buf, size_t len)
 391 {
 392         if (drv->ifindex == ifindex)
 393                 return 1;
 394
 395         if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) {
 396                 drv->ifindex = if_nametoindex(drv->ifname);
 397                 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed "
 398                            "interface");
 399                 wpa_driver_nl80211_finish_drv_init(drv);
 400                 return 1;
 401         }
 402
 403         return 0;
 404 }
 405
 406
 407 static void wpa_driver_nl80211_event_rtm_newlink(void *ctx,
 408                                                  struct ifinfomsg *ifi,
 409                                                  u8 *buf, size_t len)
 410 {
 411         struct wpa_driver_nl80211_data *drv = ctx;
 412         int attrlen, rta_len;
 413         struct rtattr *attr;
 414
 415         if (!wpa_driver_nl80211_own_ifindex(drv, ifi->ifi_index, buf, len)) {
 416                 wpa_printf(MSG_DEBUG, "Ignore event for foreign ifindex %d",
 417                            ifi->ifi_index);
 418                 return;
 419         }
 420
 421         wpa_printf(MSG_DEBUG, "RTM_NEWLINK: operstate=%d ifi_flags=0x%x "
 422                    "(%s%s%s%s)",
 423                    drv->operstate, ifi->ifi_flags,
 424                    (ifi->ifi_flags & IFF_UP) ? "[UP]" : "",
 425                    (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "",
 426                    (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "",
 427                    (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : "");
 428         /*
 429          * Some drivers send the association event before the operup event--in
 430          * this case, lifting operstate in wpa_driver_nl80211_set_operstate()
 431          * fails. This will hit us when wpa_supplicant does not need to do
 432          * IEEE 802.1X authentication
 433          */
 434         if (drv->operstate == 1 &&
 435             (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP &&
 436             !(ifi->ifi_flags & IFF_RUNNING))
 437                 netlink_send_oper_ifla(drv->netlink, drv->ifindex,
 438                                        -1, IF_OPER_UP);
 439
 440         attrlen = len;
 441         attr = (struct rtattr *) buf;
 442         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 443         while (RTA_OK(attr, attrlen)) {
 444                 if (attr->rta_type == IFLA_IFNAME) {
 445                         wpa_driver_nl80211_event_link(
 446                                 drv,
 447                                 ((char *) attr) + rta_len,
 448                                 attr->rta_len - rta_len, 0);
 449                 }
 450                 attr = RTA_NEXT(attr, attrlen);
 451         }
 452 }
 453
 454
 455 static void wpa_driver_nl80211_event_rtm_dellink(void *ctx,
 456                                                  struct ifinfomsg *ifi,
 457                                                  u8 *buf, size_t len)
 458 {
 459         struct wpa_driver_nl80211_data *drv = ctx;
 460         int attrlen, rta_len;
 461         struct rtattr *attr;
 462
 463         attrlen = len;
 464         attr = (struct rtattr *) buf;
 465
 466         rta_len = RTA_ALIGN(sizeof(struct rtattr));
 467         while (RTA_OK(attr, attrlen)) {
 468                 if (attr->rta_type == IFLA_IFNAME) {
 469                         wpa_driver_nl80211_event_link(
 470                                 drv,
 471                                 ((char *) attr) + rta_len,
 472                                 attr->rta_len - rta_len, 1);
 473                 }
 474                 attr = RTA_NEXT(attr, attrlen);
 475         }
 476 }
 477
 478
 479 static void mlme_event_auth(struct wpa_driver_nl80211_data *drv,
 480                             const u8 *frame, size_t len)
 481 {
 482         const struct ieee80211_mgmt *mgmt;
 483         union wpa_event_data event;
 484
 485         mgmt = (const struct ieee80211_mgmt *) frame;
 486         if (len < 24 + sizeof(mgmt->u.auth)) {
 487                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 488                            "frame");
 489                 return;
 490         }
 491
 492         os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN);
 493         os_memset(&event, 0, sizeof(event));
 494         os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN);
 495         event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg);
 496         event.auth.status_code = le_to_host16(mgmt->u.auth.status_code);
 497         if (len > 24 + sizeof(mgmt->u.auth)) {
 498                 event.auth.ies = mgmt->u.auth.variable;
 499                 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth);
 500         }
 501
 502         wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event);
 503 }
 504
 505
 506 static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv,
 507                             const u8 *frame, size_t len)
 508 {
 509         const struct ieee80211_mgmt *mgmt;
 510         union wpa_event_data event;
 511         u16 status;
 512
 513         mgmt = (const struct ieee80211_mgmt *) frame;
 514         if (len < 24 + sizeof(mgmt->u.assoc_resp)) {
 515                 wpa_printf(MSG_DEBUG, "nl80211: Too short association event "
 516                            "frame");
 517                 return;
 518         }
 519
 520         status = le_to_host16(mgmt->u.assoc_resp.status_code);
 521         if (status != WLAN_STATUS_SUCCESS) {
 522                 os_memset(&event, 0, sizeof(event));
 523                 if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 524                         event.assoc_reject.resp_ies =
 525                                 (u8 *) mgmt->u.assoc_resp.variable;
 526                         event.assoc_reject.resp_ies_len =
 527                                 len - 24 - sizeof(mgmt->u.assoc_resp);
 528                 }
 529                 event.assoc_reject.status_code = status;
 530
 531                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 532                 return;
 533         }
 534
 535         drv->associated = 1;
 536         os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN);
 537
 538         os_memset(&event, 0, sizeof(event));
 539         if (len > 24 + sizeof(mgmt->u.assoc_resp)) {
 540                 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable;
 541                 event.assoc_info.resp_ies_len =
 542                         len - 24 - sizeof(mgmt->u.assoc_resp);
 543         }
 544
 545         event.assoc_info.freq = drv->assoc_freq;
 546
 547         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 548 }
 549
 550
 551 static void mlme_event_connect(struct wpa_driver_nl80211_data *drv,
 552                                enum nl80211_commands cmd, struct nlattr *status,
 553                                struct nlattr *addr, struct nlattr *req_ie,
 554                                struct nlattr *resp_ie)
 555 {
 556         union wpa_event_data event;
 557
 558         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 559                 /*
 560                  * Avoid reporting two association events that would confuse
 561                  * the core code.
 562                  */
 563                 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) "
 564                            "when using userspace SME", cmd);
 565                 return;
 566         }
 567
 568         os_memset(&event, 0, sizeof(event));
 569         if (cmd == NL80211_CMD_CONNECT &&
 570             nla_get_u16(status) != WLAN_STATUS_SUCCESS) {
 571                 if (resp_ie) {
 572                         event.assoc_reject.resp_ies = nla_data(resp_ie);
 573                         event.assoc_reject.resp_ies_len = nla_len(resp_ie);
 574                 }
 575                 event.assoc_reject.status_code = nla_get_u16(status);
 576                 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event);
 577                 return;
 578         }
 579
 580         drv->associated = 1;
 581         if (addr)
 582                 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN);
 583
 584         if (req_ie) {
 585                 event.assoc_info.req_ies = nla_data(req_ie);
 586                 event.assoc_info.req_ies_len = nla_len(req_ie);
 587         }
 588         if (resp_ie) {
 589                 event.assoc_info.resp_ies = nla_data(resp_ie);
 590                 event.assoc_info.resp_ies_len = nla_len(resp_ie);
 591         }
 592
 593         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event);
 594 }
 595
 596
 597 static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv,
 598                                enum nl80211_commands cmd, struct nlattr *addr)
 599 {
 600         union wpa_event_data event;
 601         enum wpa_event_type ev;
 602
 603         if (nla_len(addr) != ETH_ALEN)
 604                 return;
 605
 606         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR,
 607                    cmd, MAC2STR((u8 *) nla_data(addr)));
 608
 609         if (cmd == NL80211_CMD_AUTHENTICATE)
 610                 ev = EVENT_AUTH_TIMED_OUT;
 611         else if (cmd == NL80211_CMD_ASSOCIATE)
 612                 ev = EVENT_ASSOC_TIMED_OUT;
 613         else
 614                 return;
 615
 616         os_memset(&event, 0, sizeof(event));
 617         os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN);
 618         wpa_supplicant_event(drv->ctx, ev, &event);
 619 }
 620
 621
 622 static void mlme_event(struct wpa_driver_nl80211_data *drv,
 623                        enum nl80211_commands cmd, struct nlattr *frame,
 624                        struct nlattr *addr, struct nlattr *timed_out)
 625 {
 626         if (timed_out && addr) {
 627                 mlme_timeout_event(drv, cmd, addr);
 628                 return;
 629         }
 630
 631         if (frame == NULL) {
 632                 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d without frame "
 633                            "data", cmd);
 634                 return;
 635         }
 636
 637         wpa_printf(MSG_DEBUG, "nl80211: MLME event %d", cmd);
 638         wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame",
 639                     nla_data(frame), nla_len(frame));
 640
 641         switch (cmd) {
 642         case NL80211_CMD_AUTHENTICATE:
 643                 mlme_event_auth(drv, nla_data(frame), nla_len(frame));
 644                 break;
 645         case NL80211_CMD_ASSOCIATE:
 646                 mlme_event_assoc(drv, nla_data(frame), nla_len(frame));
 647                 break;
 648         case NL80211_CMD_DEAUTHENTICATE:
 649                 drv->associated = 0;
 650                 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, NULL);
 651                 break;
 652         case NL80211_CMD_DISASSOCIATE:
 653                 drv->associated = 0;
 654                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 655                 break;
 656         default:
 657                 break;
 658         }
 659 }
 660
 661
 662 static void mlme_event_michael_mic_failure(struct wpa_driver_nl80211_data *drv,
 663                                            struct nlattr *tb[])
 664 {
 665         union wpa_event_data data;
 666
 667         wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure");
 668         os_memset(&data, 0, sizeof(data));
 669         if (tb[NL80211_ATTR_MAC]) {
 670                 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address",
 671                             nla_data(tb[NL80211_ATTR_MAC]),
 672                             nla_len(tb[NL80211_ATTR_MAC]));
 673                 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]);
 674         }
 675         if (tb[NL80211_ATTR_KEY_SEQ]) {
 676                 wpa_hexdump(MSG_DEBUG, "nl80211: TSC",
 677                             nla_data(tb[NL80211_ATTR_KEY_SEQ]),
 678                             nla_len(tb[NL80211_ATTR_KEY_SEQ]));
 679         }
 680         if (tb[NL80211_ATTR_KEY_TYPE]) {
 681                 enum nl80211_key_type key_type =
 682                         nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]);
 683                 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type);
 684                 if (key_type == NL80211_KEYTYPE_PAIRWISE)
 685                         data.michael_mic_failure.unicast = 1;
 686         } else
 687                 data.michael_mic_failure.unicast = 1;
 688
 689         if (tb[NL80211_ATTR_KEY_IDX]) {
 690                 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]);
 691                 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id);
 692         }
 693
 694         wpa_supplicant_event(drv->ctx, EVENT_MICHAEL_MIC_FAILURE, &data);
 695 }
 696
 697
 698 static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv,
 699                                  struct nlattr *tb[])
 700 {
 701         if (tb[NL80211_ATTR_MAC] == NULL) {
 702                 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined "
 703                            "event");
 704                 return;
 705         }
 706         os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN);
 707         drv->associated = 1;
 708         wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined",
 709                    MAC2STR(drv->bssid));
 710
 711         wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL);
 712 }
 713
 714
 715 static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv,
 716                                          int cancel_event, struct nlattr *tb[])
 717 {
 718         unsigned int freq, chan_type, duration;
 719         union wpa_event_data data;
 720         u64 cookie;
 721
 722         if (tb[NL80211_ATTR_WIPHY_FREQ])
 723                 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]);
 724         else
 725                 freq = 0;
 726
 727         if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])
 728                 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]);
 729         else
 730                 chan_type = 0;
 731
 732         if (tb[NL80211_ATTR_DURATION])
 733                 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]);
 734         else
 735                 duration = 0;
 736
 737         if (tb[NL80211_ATTR_COOKIE])
 738                 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
 739         else
 740                 cookie = 0;
 741
 742         wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d "
 743                    "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))",
 744                    cancel_event, freq, chan_type, duration,
 745                    (long long unsigned int) cookie,
 746                    cookie == drv->remain_on_chan_cookie ? "match" : "unknown");
 747
 748         if (cookie != drv->remain_on_chan_cookie)
 749                 return; /* not for us */
 750
 751         drv->pending_remain_on_chan = !cancel_event;
 752
 753         os_memset(&data, 0, sizeof(data));
 754         data.remain_on_channel.freq = freq;
 755         data.remain_on_channel.duration = duration;
 756         wpa_supplicant_event(drv->ctx, cancel_event ?
 757                              EVENT_CANCEL_REMAIN_ON_CHANNEL :
 758                              EVENT_REMAIN_ON_CHANNEL, &data);
 759 }
 760
 761
 762 static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted,
 763                             struct nlattr *tb[])
 764 {
 765         union wpa_event_data event;
 766         struct nlattr *nl;
 767         int rem;
 768         struct scan_info *info;
 769 #define MAX_REPORT_FREQS 50
 770         int freqs[MAX_REPORT_FREQS];
 771         int num_freqs = 0;
 772
 773         os_memset(&event, 0, sizeof(event));
 774         info = &event.scan_info;
 775         info->aborted = aborted;
 776
 777         if (tb[NL80211_ATTR_SCAN_SSIDS]) {
 778                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) {
 779                         struct wpa_driver_scan_ssid *s =
 780                                 &info->ssids[info->num_ssids];
 781                         s->ssid = nla_data(nl);
 782                         s->ssid_len = nla_len(nl);
 783                         info->num_ssids++;
 784                         if (info->num_ssids == WPAS_MAX_SCAN_SSIDS)
 785                                 break;
 786                 }
 787         }
 788         if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) {
 789                 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem)
 790                 {
 791                         freqs[num_freqs] = nla_get_u32(nl);
 792                         num_freqs++;
 793                         if (num_freqs == MAX_REPORT_FREQS - 1)
 794                                 break;
 795                 }
 796                 info->freqs = freqs;
 797                 info->num_freqs = num_freqs;
 798         }
 799         wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event);
 800 }
 801
 802
 803 static int process_event(struct nl_msg *msg, void *arg)
 804 {
 805         struct wpa_driver_nl80211_data *drv = arg;
 806         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
 807         struct nlattr *tb[NL80211_ATTR_MAX + 1];
 808
 809         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
 810                   genlmsg_attrlen(gnlh, 0), NULL);
 811
 812         if (tb[NL80211_ATTR_IFINDEX]) {
 813                 int ifindex = nla_get_u32(tb[NL80211_ATTR_IFINDEX]);
 814                 if (ifindex != drv->ifindex) {
 815                         wpa_printf(MSG_DEBUG, "nl80211: Ignored event (cmd=%d)"
 816                                    " for foreign interface (ifindex %d)",
 817                                    gnlh->cmd, ifindex);
 818                         return NL_SKIP;
 819                 }
 820         }
 821
 822         if (drv->ap_scan_as_station &&
 823             (gnlh->cmd == NL80211_CMD_NEW_SCAN_RESULTS ||
 824              gnlh->cmd == NL80211_CMD_SCAN_ABORTED)) {
 825                 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
 826                 drv->ap_scan_as_station = 0;
 827         }
 828
 829         switch (gnlh->cmd) {
 830         case NL80211_CMD_TRIGGER_SCAN:
 831                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger");
 832                 break;
 833         case NL80211_CMD_NEW_SCAN_RESULTS:
 834                 wpa_printf(MSG_DEBUG, "nl80211: New scan results available");
 835                 drv->scan_complete_events = 1;
 836                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 837                                      drv->ctx);
 838                 send_scan_event(drv, 0, tb);
 839                 break;
 840         case NL80211_CMD_SCAN_ABORTED:
 841                 wpa_printf(MSG_DEBUG, "nl80211: Scan aborted");
 842                 /*
 843                  * Need to indicate that scan results are available in order
 844                  * not to make wpa_supplicant stop its scanning.
 845                  */
 846                 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv,
 847                                      drv->ctx);
 848                 send_scan_event(drv, 1, tb);
 849                 break;
 850         case NL80211_CMD_AUTHENTICATE:
 851         case NL80211_CMD_ASSOCIATE:
 852         case NL80211_CMD_DEAUTHENTICATE:
 853         case NL80211_CMD_DISASSOCIATE:
 854                 mlme_event(drv, gnlh->cmd, tb[NL80211_ATTR_FRAME],
 855                            tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT]);
 856                 break;
 857         case NL80211_CMD_CONNECT:
 858         case NL80211_CMD_ROAM:
 859                 mlme_event_connect(drv, gnlh->cmd,
 860                                    tb[NL80211_ATTR_STATUS_CODE],
 861                                    tb[NL80211_ATTR_MAC],
 862                                    tb[NL80211_ATTR_REQ_IE],
 863                                    tb[NL80211_ATTR_RESP_IE]);
 864                 break;
 865         case NL80211_CMD_DISCONNECT:
 866                 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
 867                         /*
 868                          * Avoid reporting two disassociation events that could
 869                          * confuse the core code.
 870                          */
 871                         wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect "
 872                                    "event when using userspace SME");
 873                         break;
 874                 }
 875                 drv->associated = 0;
 876                 wpa_supplicant_event(drv->ctx, EVENT_DISASSOC, NULL);
 877                 break;
 878         case NL80211_CMD_MICHAEL_MIC_FAILURE:
 879                 mlme_event_michael_mic_failure(drv, tb);
 880                 break;
 881         case NL80211_CMD_JOIN_IBSS:
 882                 mlme_event_join_ibss(drv, tb);
 883                 break;
 884         case NL80211_CMD_REMAIN_ON_CHANNEL:
 885                 mlme_event_remain_on_channel(drv, 0, tb);
 886                 break;
 887         case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL:
 888                 mlme_event_remain_on_channel(drv, 1, tb);
 889                 break;
 890         default:
 891                 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event "
 892                            "(cmd=%d)", gnlh->cmd);
 893                 break;
 894         }
 895
 896         return NL_SKIP;
 897 }
 898
 899
 900 static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx,
 901                                              void *sock_ctx)
 902 {
 903         struct nl_cb *cb;
 904         struct wpa_driver_nl80211_data *drv = eloop_ctx;
 905
 906         wpa_printf(MSG_DEBUG, "nl80211: Event message available");
 907
 908         cb = nl_cb_clone(drv->nl_cb);
 909         if (!cb)
 910                 return;
 911         nl_cb_set(cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL);
 912         nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, process_event, drv);
 913         nl_recvmsgs(drv->nl_handle_event, cb);
 914         nl_cb_put(cb);
 915 }
 916
 917
 918 static int hostapd_set_iface_flags(struct wpa_driver_nl80211_data *drv,
 919                                    const char *ifname, int dev_up)
 920 {
 921         struct ifreq ifr;
 922
 923         if (drv->ioctl_sock < 0)
 924                 return -1;
 925
 926         os_memset(&ifr, 0, sizeof(ifr));
 927         os_strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
 928
 929         if (ioctl(drv->ioctl_sock, SIOCGIFFLAGS, &ifr) != 0) {
 930                 perror("ioctl[SIOCGIFFLAGS]");
 931                 wpa_printf(MSG_DEBUG, "Could not read interface flags (%s)",
 932                            ifname);
 933                 return -1;
 934         }
 935
 936         if (dev_up) {
 937                 if (ifr.ifr_flags & IFF_UP)
 938                         return 0;
 939                 ifr.ifr_flags |= IFF_UP;
 940         } else {
 941                 if (!(ifr.ifr_flags & IFF_UP))
 942                         return 0;
 943                 ifr.ifr_flags &= ~IFF_UP;
 944         }
 945
 946         if (ioctl(drv->ioctl_sock, SIOCSIFFLAGS, &ifr) != 0) {
 947                 perror("ioctl[SIOCSIFFLAGS]");
 948                 return -1;
 949         }
 950
 951         return 0;
 952 }
 953
 954
 955 /**
 956  * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain
 957  * @priv: driver_nl80211 private data
 958  * @alpha2_arg: country to which to switch to
 959  * Returns: 0 on success, -1 on failure
 960  *
 961  * This asks nl80211 to set the regulatory domain for given
 962  * country ISO / IEC alpha2.
 963  */
 964 static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg)
 965 {
 966         struct wpa_driver_nl80211_data *drv = priv;
 967         char alpha2[3];
 968         struct nl_msg *msg;
 969
 970         msg = nlmsg_alloc();
 971         if (!msg)
 972                 return -ENOMEM;
 973
 974         alpha2[0] = alpha2_arg[0];
 975         alpha2[1] = alpha2_arg[1];
 976         alpha2[2] = '\0';
 977
 978         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
 979                     0, NL80211_CMD_REQ_SET_REG, 0);
 980
 981         NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2);
 982         if (send_and_recv_msgs(drv, msg, NULL, NULL))
 983                 return -EINVAL;
 984         return 0;
 985 nla_put_failure:
 986         return -EINVAL;
 987 }
 988
 989
 990 #ifndef HOSTAPD
 991 struct wiphy_info_data {
 992         int max_scan_ssids;
 993         int ap_supported;
 994         int auth_supported;
 995         int connect_supported;
 996 };
 997
 998
 999 static int wiphy_info_handler(struct nl_msg *msg, void *arg)
1000 {
1001         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1002         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1003         struct wiphy_info_data *info = arg;
1004
1005         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1006                   genlmsg_attrlen(gnlh, 0), NULL);
1007
1008         if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS])
1009                 info->max_scan_ssids =
1010                         nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]);
1011
1012         if (tb[NL80211_ATTR_SUPPORTED_IFTYPES]) {
1013                 struct nlattr *nl_mode;
1014                 int i;
1015                 nla_for_each_nested(nl_mode,
1016                                     tb[NL80211_ATTR_SUPPORTED_IFTYPES], i) {
1017                         if (nl_mode->nla_type == NL80211_IFTYPE_AP) {
1018                                 info->ap_supported = 1;
1019                                 break;
1020                         }
1021                 }
1022         }
1023
1024         if (tb[NL80211_ATTR_SUPPORTED_COMMANDS]) {
1025                 struct nlattr *nl_cmd;
1026                 int i;
1027
1028                 nla_for_each_nested(nl_cmd,
1029                                     tb[NL80211_ATTR_SUPPORTED_COMMANDS], i) {
1030                         u32 cmd = nla_get_u32(nl_cmd);
1031                         if (cmd == NL80211_CMD_AUTHENTICATE)
1032                                 info->auth_supported = 1;
1033                         else if (cmd == NL80211_CMD_CONNECT)
1034                                 info->connect_supported = 1;
1035                 }
1036         }
1037
1038         return NL_SKIP;
1039 }
1040
1041
1042 static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv,
1043                                        struct wiphy_info_data *info)
1044 {
1045         struct nl_msg *msg;
1046
1047         os_memset(info, 0, sizeof(*info));
1048         msg = nlmsg_alloc();
1049         if (!msg)
1050                 return -1;
1051
1052         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1053                     0, NL80211_CMD_GET_WIPHY, 0);
1054
1055         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1056
1057         if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info) == 0)
1058                 return 0;
1059         msg = NULL;
1060 nla_put_failure:
1061         nlmsg_free(msg);
1062         return -1;
1063 }
1064
1065
1066 static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv)
1067 {
1068         struct wiphy_info_data info;
1069         if (wpa_driver_nl80211_get_info(drv, &info))
1070                 return -1;
1071         drv->has_capability = 1;
1072         /* For now, assume TKIP, CCMP, WPA, WPA2 are supported */
1073         drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA |
1074                 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK |
1075                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 |
1076                 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK;
1077         drv->capa.enc = WPA_DRIVER_CAPA_ENC_WEP40 |
1078                 WPA_DRIVER_CAPA_ENC_WEP104 |
1079                 WPA_DRIVER_CAPA_ENC_TKIP |
1080                 WPA_DRIVER_CAPA_ENC_CCMP;
1081         drv->capa.auth = WPA_DRIVER_AUTH_OPEN |
1082                 WPA_DRIVER_AUTH_SHARED |
1083                 WPA_DRIVER_AUTH_LEAP;
1084
1085         drv->capa.max_scan_ssids = info.max_scan_ssids;
1086         if (info.ap_supported)
1087                 drv->capa.flags |= WPA_DRIVER_FLAGS_AP;
1088
1089         if (info.auth_supported)
1090                 drv->capa.flags |= WPA_DRIVER_FLAGS_SME;
1091         else if (!info.connect_supported) {
1092                 wpa_printf(MSG_INFO, "nl80211: Driver does not support "
1093                            "authentication/association or connect commands");
1094                 return -1;
1095         }
1096
1097         drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE;
1098
1099         return 0;
1100 }
1101 #endif /* HOSTAPD */
1102
1103
1104 static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv,
1105                                       void *ctx)
1106 {
1107         int ret;
1108
1109         /* Initialize generic netlink and nl80211 */
1110
1111         drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT);
1112         if (drv->nl_cb == NULL) {
1113                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1114                            "callbacks");
1115                 goto err1;
1116         }
1117
1118         drv->nl_handle = nl_handle_alloc_cb(drv->nl_cb);
1119         if (drv->nl_handle == NULL) {
1120                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1121                            "callbacks");
1122                 goto err2;
1123         }
1124
1125         drv->nl_handle_event = nl_handle_alloc_cb(drv->nl_cb);
1126         if (drv->nl_handle_event == NULL) {
1127                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink "
1128                            "callbacks (event)");
1129                 goto err2b;
1130         }
1131
1132         if (genl_connect(drv->nl_handle)) {
1133                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1134                            "netlink");
1135                 goto err3;
1136         }
1137
1138         if (genl_connect(drv->nl_handle_event)) {
1139                 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic "
1140                            "netlink (event)");
1141                 goto err3;
1142         }
1143
1144 #ifdef CONFIG_LIBNL20
1145         if (genl_ctrl_alloc_cache(drv->nl_handle, &drv->nl_cache) < 0) {
1146                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1147                            "netlink cache");
1148                 goto err3;
1149         }
1150         if (genl_ctrl_alloc_cache(drv->nl_handle_event, &drv->nl_cache_event) <
1151             0) {
1152                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1153                            "netlink cache (event)");
1154                 goto err3b;
1155         }
1156 #else /* CONFIG_LIBNL20 */
1157         drv->nl_cache = genl_ctrl_alloc_cache(drv->nl_handle);
1158         if (drv->nl_cache == NULL) {
1159                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1160                            "netlink cache");
1161                 goto err3;
1162         }
1163         drv->nl_cache_event = genl_ctrl_alloc_cache(drv->nl_handle_event);
1164         if (drv->nl_cache_event == NULL) {
1165                 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic "
1166                            "netlink cache (event)");
1167                 goto err3b;
1168         }
1169 #endif /* CONFIG_LIBNL20 */
1170
1171         drv->nl80211 = genl_ctrl_search_by_name(drv->nl_cache, "nl80211");
1172         if (drv->nl80211 == NULL) {
1173                 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not "
1174                            "found");
1175                 goto err4;
1176         }
1177
1178         ret = nl_get_multicast_id(drv, "nl80211", "scan");
1179         if (ret >= 0)
1180                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1181         if (ret < 0) {
1182                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1183                            "membership for scan events: %d (%s)",
1184                            ret, strerror(-ret));
1185                 goto err4;
1186         }
1187
1188         ret = nl_get_multicast_id(drv, "nl80211", "mlme");
1189         if (ret >= 0)
1190                 ret = nl_socket_add_membership(drv->nl_handle_event, ret);
1191         if (ret < 0) {
1192                 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast "
1193                            "membership for mlme events: %d (%s)",
1194                            ret, strerror(-ret));
1195                 goto err4;
1196         }
1197
1198         eloop_register_read_sock(nl_socket_get_fd(drv->nl_handle_event),
1199                                  wpa_driver_nl80211_event_receive, drv, ctx);
1200
1201         return 0;
1202
1203 err4:
1204         nl_cache_free(drv->nl_cache_event);
1205 err3b:
1206         nl_cache_free(drv->nl_cache);
1207 err3:
1208         nl_handle_destroy(drv->nl_handle_event);
1209 err2b:
1210         nl_handle_destroy(drv->nl_handle);
1211 err2:
1212         nl_cb_put(drv->nl_cb);
1213 err1:
1214         return -1;
1215 }
1216
1217
1218 /**
1219  * wpa_driver_nl80211_init - Initialize nl80211 driver interface
1220  * @ctx: context to be used when calling wpa_supplicant functions,
1221  * e.g., wpa_supplicant_event()
1222  * @ifname: interface name, e.g., wlan0
1223  * Returns: Pointer to private data, %NULL on failure
1224  */
1225 static void * wpa_driver_nl80211_init(void *ctx, const char *ifname)
1226 {
1227         struct wpa_driver_nl80211_data *drv;
1228         struct netlink_config *cfg;
1229
1230         drv = os_zalloc(sizeof(*drv));
1231         if (drv == NULL)
1232                 return NULL;
1233         drv->ctx = ctx;
1234         os_strlcpy(drv->ifname, ifname, sizeof(drv->ifname));
1235         drv->monitor_ifidx = -1;
1236         drv->monitor_sock = -1;
1237         drv->ioctl_sock = -1;
1238
1239         if (wpa_driver_nl80211_init_nl(drv, ctx)) {
1240                 os_free(drv);
1241                 return NULL;
1242         }
1243
1244         drv->ioctl_sock = socket(PF_INET, SOCK_DGRAM, 0);
1245         if (drv->ioctl_sock < 0) {
1246                 perror("socket(PF_INET,SOCK_DGRAM)");
1247                 goto failed;
1248         }
1249
1250         cfg = os_zalloc(sizeof(*cfg));
1251         if (cfg == NULL)
1252                 goto failed;
1253         cfg->ctx = drv;
1254         cfg->newlink_cb = wpa_driver_nl80211_event_rtm_newlink;
1255         cfg->dellink_cb = wpa_driver_nl80211_event_rtm_dellink;
1256         drv->netlink = netlink_init(cfg);
1257         if (drv->netlink == NULL) {
1258                 os_free(cfg);
1259                 goto failed;
1260         }
1261         if (wpa_driver_nl80211_finish_drv_init(drv))
1262                 goto failed;
1263
1264         return drv;
1265
1266 failed:
1267         netlink_deinit(drv->netlink);
1268         if (drv->ioctl_sock >= 0)
1269                 close(drv->ioctl_sock);
1270
1271         genl_family_put(drv->nl80211);
1272         nl_cache_free(drv->nl_cache);
1273         nl_handle_destroy(drv->nl_handle);
1274         nl_cb_put(drv->nl_cb);
1275
1276         os_free(drv);
1277         return NULL;
1278 }
1279
1280
1281 static int
1282 wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv)
1283 {
1284         drv->ifindex = if_nametoindex(drv->ifname);
1285
1286 #ifndef HOSTAPD
1287         if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0) {
1288                 wpa_printf(MSG_DEBUG, "nl80211: Could not configure driver to "
1289                            "use managed mode");
1290         }
1291
1292         if (hostapd_set_iface_flags(drv, drv->ifname, 1)) {
1293                 wpa_printf(MSG_ERROR, "Could not set interface '%s' "
1294                            "UP", drv->ifname);
1295                 return -1;
1296         }
1297
1298         if (wpa_driver_nl80211_capa(drv))
1299                 return -1;
1300
1301         netlink_send_oper_ifla(drv->netlink, drv->ifindex,
1302                                1, IF_OPER_DORMANT);
1303 #endif /* HOSTAPD */
1304
1305         return 0;
1306 }
1307
1308
1309 #ifdef HOSTAPD
1310 static void wpa_driver_nl80211_free_bss(struct wpa_driver_nl80211_data *drv)
1311 {
1312         struct i802_bss *bss, *prev;
1313         bss = drv->bss.next;
1314         while (bss) {
1315                 prev = bss;
1316                 bss = bss->next;
1317                 os_free(bss);
1318         }
1319 }
1320 #endif /* HOSTAPD */
1321
1322
1323 static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv)
1324 {
1325         struct nl_msg *msg;
1326
1327         msg = nlmsg_alloc();
1328         if (!msg)
1329                 return -ENOMEM;
1330
1331         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1332                     0, NL80211_CMD_DEL_BEACON, 0);
1333         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1334
1335         return send_and_recv_msgs(drv, msg, NULL, NULL);
1336  nla_put_failure:
1337         return -ENOBUFS;
1338 }
1339
1340
1341 /**
1342  * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface
1343  * @priv: Pointer to private nl80211 data from wpa_driver_nl80211_init()
1344  *
1345  * Shut down driver interface and processing of driver events. Free
1346  * private data buffer if one was allocated in wpa_driver_nl80211_init().
1347  */
1348 static void wpa_driver_nl80211_deinit(void *priv)
1349 {
1350         struct wpa_driver_nl80211_data *drv = priv;
1351
1352         nl80211_remove_monitor_interface(drv);
1353
1354         if (drv->nlmode == NL80211_IFTYPE_AP)
1355                 wpa_driver_nl80211_del_beacon(drv);
1356
1357 #ifdef HOSTAPD
1358         if (drv->last_freq_ht) {
1359                 /* Clear HT flags from the driver */
1360                 struct hostapd_freq_params freq;
1361                 os_memset(&freq, 0, sizeof(freq));
1362                 freq.freq = drv->last_freq;
1363                 i802_set_freq(priv, &freq);
1364         }
1365
1366         if (drv->eapol_sock >= 0) {
1367                 eloop_unregister_read_sock(drv->eapol_sock);
1368                 close(drv->eapol_sock);
1369         }
1370
1371         if (drv->if_indices != drv->default_if_indices)
1372                 os_free(drv->if_indices);
1373
1374         wpa_driver_nl80211_free_bss(drv);
1375 #endif /* HOSTAPD */
1376
1377         netlink_send_oper_ifla(drv->netlink, drv->ifindex, 0, IF_OPER_UP);
1378         netlink_deinit(drv->netlink);
1379
1380         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1381
1382         (void) hostapd_set_iface_flags(drv, drv->ifname, 0);
1383         wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA);
1384
1385         if (drv->ioctl_sock >= 0)
1386                 close(drv->ioctl_sock);
1387
1388         eloop_unregister_read_sock(nl_socket_get_fd(drv->nl_handle_event));
1389         genl_family_put(drv->nl80211);
1390         nl_cache_free(drv->nl_cache);
1391         nl_cache_free(drv->nl_cache_event);
1392         nl_handle_destroy(drv->nl_handle);
1393         nl_handle_destroy(drv->nl_handle_event);
1394         nl_cb_put(drv->nl_cb);
1395
1396         eloop_cancel_timeout(wpa_driver_nl80211_probe_req_report_timeout,
1397                              drv, NULL);
1398
1399         os_free(drv);
1400 }
1401
1402
1403 /**
1404  * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion
1405  * @eloop_ctx: Driver private data
1406  * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init()
1407  *
1408  * This function can be used as registered timeout when starting a scan to
1409  * generate a scan completed event if the driver does not report this.
1410  */
1411 static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1412 {
1413         struct wpa_driver_nl80211_data *drv = eloop_ctx;
1414         if (drv->ap_scan_as_station) {
1415                 wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP);
1416                 drv->ap_scan_as_station = 0;
1417         }
1418         wpa_printf(MSG_DEBUG, "Scan timeout - try to get results");
1419         wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL);
1420 }
1421
1422
1423 /**
1424  * wpa_driver_nl80211_scan - Request the driver to initiate scan
1425  * @priv: Pointer to private driver data from wpa_driver_nl80211_init()
1426  * @params: Scan parameters
1427  * Returns: 0 on success, -1 on failure
1428  */
1429 static int wpa_driver_nl80211_scan(void *priv,
1430                                    struct wpa_driver_scan_params *params)
1431 {
1432         struct wpa_driver_nl80211_data *drv = priv;
1433         int ret = 0, timeout;
1434         struct nl_msg *msg, *ssids, *freqs;
1435         size_t i;
1436
1437         msg = nlmsg_alloc();
1438         ssids = nlmsg_alloc();
1439         freqs = nlmsg_alloc();
1440         if (!msg || !ssids || !freqs) {
1441                 nlmsg_free(msg);
1442                 nlmsg_free(ssids);
1443                 nlmsg_free(freqs);
1444                 return -1;
1445         }
1446
1447         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
1448                     NL80211_CMD_TRIGGER_SCAN, 0);
1449
1450         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1451
1452         for (i = 0; i < params->num_ssids; i++) {
1453                 NLA_PUT(ssids, i + 1, params->ssids[i].ssid_len,
1454                         params->ssids[i].ssid);
1455         }
1456         if (params->num_ssids)
1457                 nla_put_nested(msg, NL80211_ATTR_SCAN_SSIDS, ssids);
1458
1459         if (params->extra_ies) {
1460                 NLA_PUT(msg, NL80211_ATTR_IE, params->extra_ies_len,
1461                         params->extra_ies);
1462         }
1463
1464         if (params->freqs) {
1465                 for (i = 0; params->freqs[i]; i++)
1466                         NLA_PUT_U32(freqs, i + 1, params->freqs[i]);
1467                 nla_put_nested(msg, NL80211_ATTR_SCAN_FREQUENCIES, freqs);
1468         }
1469
1470         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1471         msg = NULL;
1472         if (ret) {
1473                 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d "
1474                            "(%s)", ret, strerror(-ret));
1475 #ifdef HOSTAPD
1476                 if (drv->nlmode == NL80211_IFTYPE_AP) {
1477                         /*
1478                          * mac80211 does not allow scan requests in AP mode, so
1479                          * try to do this in station mode.
1480                          */
1481                         if (wpa_driver_nl80211_set_mode(drv,
1482                                                         IEEE80211_MODE_INFRA))
1483                                 goto nla_put_failure;
1484
1485                         if (wpa_driver_nl80211_scan(drv, params)) {
1486                                 wpa_driver_nl80211_set_mode(drv,
1487                                                             IEEE80211_MODE_AP);
1488                                 goto nla_put_failure;
1489                         }
1490
1491                         /* Restore AP mode when processing scan results */
1492                         drv->ap_scan_as_station = 1;
1493                         ret = 0;
1494                 } else
1495                         goto nla_put_failure;
1496 #else /* HOSTAPD */
1497                 goto nla_put_failure;
1498 #endif /* HOSTAPD */
1499         }
1500
1501         /* Not all drivers generate "scan completed" wireless event, so try to
1502          * read results after a timeout. */
1503         timeout = 10;
1504         if (drv->scan_complete_events) {
1505                 /*
1506                  * The driver seems to deliver events to notify when scan is
1507                  * complete, so use longer timeout to avoid race conditions
1508                  * with scanning and following association request.
1509                  */
1510                 timeout = 30;
1511         }
1512         wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d "
1513                    "seconds", ret, timeout);
1514         eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx);
1515         eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout,
1516                                drv, drv->ctx);
1517
1518 nla_put_failure:
1519         nlmsg_free(ssids);
1520         nlmsg_free(msg);
1521         nlmsg_free(freqs);
1522         return ret;
1523 }
1524
1525
1526 static int bss_info_handler(struct nl_msg *msg, void *arg)
1527 {
1528         struct nlattr *tb[NL80211_ATTR_MAX + 1];
1529         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
1530         struct nlattr *bss[NL80211_BSS_MAX + 1];
1531         static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = {
1532                 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC },
1533                 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 },
1534                 [NL80211_BSS_TSF] = { .type = NLA_U64 },
1535                 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 },
1536                 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 },
1537                 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC },
1538                 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 },
1539                 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 },
1540                 [NL80211_BSS_STATUS] = { .type = NLA_U32 },
1541                 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 },
1542         };
1543         struct wpa_scan_results *res = arg;
1544         struct wpa_scan_res **tmp;
1545         struct wpa_scan_res *r;
1546         const u8 *ie;
1547         size_t ie_len;
1548
1549         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
1550                   genlmsg_attrlen(gnlh, 0), NULL);
1551         if (!tb[NL80211_ATTR_BSS])
1552                 return NL_SKIP;
1553         if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS],
1554                              bss_policy))
1555                 return NL_SKIP;
1556         if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) {
1557                 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1558                 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]);
1559         } else {
1560                 ie = NULL;
1561                 ie_len = 0;
1562         }
1563
1564         r = os_zalloc(sizeof(*r) + ie_len);
1565         if (r == NULL)
1566                 return NL_SKIP;
1567         if (bss[NL80211_BSS_BSSID])
1568                 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]),
1569                           ETH_ALEN);
1570         if (bss[NL80211_BSS_FREQUENCY])
1571                 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]);
1572         if (bss[NL80211_BSS_BEACON_INTERVAL])
1573                 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]);
1574         if (bss[NL80211_BSS_CAPABILITY])
1575                 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]);
1576         r->flags |= WPA_SCAN_NOISE_INVALID;
1577         if (bss[NL80211_BSS_SIGNAL_MBM]) {
1578                 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]);
1579                 r->level /= 100; /* mBm to dBm */
1580                 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID;
1581         } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) {
1582                 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]);
1583                 r->flags |= WPA_SCAN_LEVEL_INVALID;
1584         } else
1585                 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID;
1586         if (bss[NL80211_BSS_TSF])
1587                 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]);
1588         if (bss[NL80211_BSS_SEEN_MS_AGO])
1589                 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]);
1590         r->ie_len = ie_len;
1591         if (ie)
1592                 os_memcpy(r + 1, ie, ie_len);
1593
1594         if (bss[NL80211_BSS_STATUS]) {
1595                 enum nl80211_bss_status status;
1596                 status = nla_get_u32(bss[NL80211_BSS_STATUS]);
1597                 switch (status) {
1598                 case NL80211_BSS_STATUS_AUTHENTICATED:
1599                         r->flags |= WPA_SCAN_AUTHENTICATED;
1600                         break;
1601                 case NL80211_BSS_STATUS_ASSOCIATED:
1602                         r->flags |= WPA_SCAN_ASSOCIATED;
1603                         break;
1604                 default:
1605                         break;
1606                 }
1607         }
1608
1609         tmp = os_realloc(res->res,
1610                          (res->num + 1) * sizeof(struct wpa_scan_res *));
1611         if (tmp == NULL) {
1612                 os_free(r);
1613                 return NL_SKIP;
1614         }
1615         tmp[res->num++] = r;
1616         res->res = tmp;
1617
1618         return NL_SKIP;
1619 }
1620
1621
1622 static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv,
1623                                  const u8 *addr)
1624 {
1625         if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) {
1626                 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state "
1627                            "mismatch");
1628                 wpa_driver_nl80211_mlme(drv, addr,
1629                                         NL80211_CMD_DEAUTHENTICATE,
1630                                         WLAN_REASON_PREV_AUTH_NOT_VALID);
1631         }
1632 }
1633
1634
1635 static void wpa_driver_nl80211_check_bss_status(
1636         struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res)
1637 {
1638         size_t i;
1639
1640         for (i = 0; i < res->num; i++) {
1641                 struct wpa_scan_res *r = res->res[i];
1642                 if (r->flags & WPA_SCAN_AUTHENTICATED) {
1643                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1644                                    "indicates BSS status with " MACSTR
1645                                    " as authenticated",
1646                                    MAC2STR(r->bssid));
1647                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
1648                             os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 &&
1649                             os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) !=
1650                             0) {
1651                                 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID"
1652                                            " in local state (auth=" MACSTR
1653                                            " assoc=" MACSTR ")",
1654                                            MAC2STR(drv->auth_bssid),
1655                                            MAC2STR(drv->bssid));
1656                         }
1657                 }
1658
1659                 if (r->flags & WPA_SCAN_ASSOCIATED) {
1660                         wpa_printf(MSG_DEBUG, "nl80211: Scan results "
1661                                    "indicate BSS status with " MACSTR
1662                                    " as associated",
1663                                    MAC2STR(r->bssid));
1664                         if (drv->nlmode == NL80211_IFTYPE_STATION &&
1665                             !drv->associated) {
1666                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1667                                            "(not associated) does not match "
1668                                            "with BSS state");
1669                                 clear_state_mismatch(drv, r->bssid);
1670                         } else if (drv->nlmode == NL80211_IFTYPE_STATION &&
1671                                    os_memcmp(drv->bssid, r->bssid, ETH_ALEN) !=
1672                                    0) {
1673                                 wpa_printf(MSG_DEBUG, "nl80211: Local state "
1674                                            "(associated with " MACSTR ") does "
1675                                            "not match with BSS state",
1676                                            MAC2STR(drv->bssid));
1677                                 clear_state_mismatch(drv, r->bssid);
1678                                 clear_state_mismatch(drv, drv->bssid);
1679                         }
1680                 }
1681         }
1682 }
1683
1684
1685 /**
1686  * wpa_driver_nl80211_get_scan_results - Fetch the latest scan results
1687  * @priv: Pointer to private wext data from wpa_driver_nl80211_init()
1688  * Returns: Scan results on success, -1 on failure
1689  */
1690 static struct wpa_scan_results *
1691 wpa_driver_nl80211_get_scan_results(void *priv)
1692 {
1693         struct wpa_driver_nl80211_data *drv = priv;
1694         struct nl_msg *msg;
1695         struct wpa_scan_results *res;
1696         int ret;
1697
1698         res = os_zalloc(sizeof(*res));
1699         if (res == NULL)
1700                 return NULL;
1701         msg = nlmsg_alloc();
1702         if (!msg)
1703                 goto nla_put_failure;
1704
1705         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, NLM_F_DUMP,
1706                     NL80211_CMD_GET_SCAN, 0);
1707         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1708
1709         ret = send_and_recv_msgs(drv, msg, bss_info_handler, res);
1710         msg = NULL;
1711         if (ret == 0) {
1712                 wpa_printf(MSG_DEBUG, "Received scan results (%lu BSSes)",
1713                            (unsigned long) res->num);
1714                 wpa_driver_nl80211_check_bss_status(drv, res);
1715                 return res;
1716         }
1717         wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d "
1718                    "(%s)", ret, strerror(-ret));
1719 nla_put_failure:
1720         nlmsg_free(msg);
1721         wpa_scan_results_free(res);
1722         return NULL;
1723 }
1724
1725
1726 static int wpa_driver_nl80211_set_key(const char *ifname, void *priv,
1727                                       enum wpa_alg alg, const u8 *addr,
1728                                       int key_idx, int set_tx,
1729                                       const u8 *seq, size_t seq_len,
1730                                       const u8 *key, size_t key_len)
1731 {
1732         struct wpa_driver_nl80211_data *drv = priv;
1733         int ifindex = if_nametoindex(ifname);
1734         struct nl_msg *msg;
1735         int ret;
1736
1737         wpa_printf(MSG_DEBUG, "%s: ifindex=%d alg=%d addr=%p key_idx=%d "
1738                    "set_tx=%d seq_len=%lu key_len=%lu",
1739                    __func__, ifindex, alg, addr, key_idx, set_tx,
1740                    (unsigned long) seq_len, (unsigned long) key_len);
1741
1742         msg = nlmsg_alloc();
1743         if (!msg)
1744                 return -ENOMEM;
1745
1746         if (alg == WPA_ALG_NONE) {
1747                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1748                             0, NL80211_CMD_DEL_KEY, 0);
1749         } else {
1750                 genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1751                             0, NL80211_CMD_NEW_KEY, 0);
1752                 NLA_PUT(msg, NL80211_ATTR_KEY_DATA, key_len, key);
1753                 switch (alg) {
1754                 case WPA_ALG_WEP:
1755                         if (key_len == 5)
1756                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1757                                             WLAN_CIPHER_SUITE_WEP40);
1758                         else
1759                                 NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1760                                             WLAN_CIPHER_SUITE_WEP104);
1761                         break;
1762                 case WPA_ALG_TKIP:
1763                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1764                                     WLAN_CIPHER_SUITE_TKIP);
1765                         break;
1766                 case WPA_ALG_CCMP:
1767                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1768                                     WLAN_CIPHER_SUITE_CCMP);
1769                         break;
1770                 case WPA_ALG_IGTK:
1771                         NLA_PUT_U32(msg, NL80211_ATTR_KEY_CIPHER,
1772                                     WLAN_CIPHER_SUITE_AES_CMAC);
1773                         break;
1774                 default:
1775                         wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1776                                    "algorithm %d", __func__, alg);
1777                         nlmsg_free(msg);
1778                         return -1;
1779                 }
1780         }
1781
1782         if (seq && seq_len)
1783                 NLA_PUT(msg, NL80211_ATTR_KEY_SEQ, seq_len, seq);
1784
1785         if (addr && os_memcmp(addr, "\xff\xff\xff\xff\xff\xff", ETH_ALEN) != 0)
1786         {
1787                 wpa_printf(MSG_DEBUG, "   addr=" MACSTR, MAC2STR(addr));
1788                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1789         }
1790         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1791         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1792
1793         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1794         if (ret == -ENOENT && alg == WPA_ALG_NONE)
1795                 ret = 0;
1796         if (ret)
1797                 wpa_printf(MSG_DEBUG, "nl80211: set_key failed; err=%d %s)",
1798                            ret, strerror(-ret));
1799
1800         /*
1801          * If we failed or don't need to set the default TX key (below),
1802          * we're done here.
1803          */
1804         if (ret || !set_tx || alg == WPA_ALG_NONE)
1805                 return ret;
1806 #ifdef HOSTAPD /* FIX: is this needed? */
1807         if (addr)
1808                 return ret;
1809 #endif /* HOSTAPD */
1810
1811         msg = nlmsg_alloc();
1812         if (!msg)
1813                 return -ENOMEM;
1814
1815         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
1816                     0, NL80211_CMD_SET_KEY, 0);
1817         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, key_idx);
1818         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
1819         if (alg == WPA_ALG_IGTK)
1820                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT_MGMT);
1821         else
1822                 NLA_PUT_FLAG(msg, NL80211_ATTR_KEY_DEFAULT);
1823
1824         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1825         if (ret == -ENOENT)
1826                 ret = 0;
1827         if (ret)
1828                 wpa_printf(MSG_DEBUG, "nl80211: set_key default failed; "
1829                            "err=%d %s)", ret, strerror(-ret));
1830         return ret;
1831
1832 nla_put_failure:
1833         return -ENOBUFS;
1834 }
1835
1836
1837 static int nl_add_key(struct nl_msg *msg, enum wpa_alg alg,
1838                       int key_idx, int defkey,
1839                       const u8 *seq, size_t seq_len,
1840                       const u8 *key, size_t key_len)
1841 {
1842         struct nlattr *key_attr = nla_nest_start(msg, NL80211_ATTR_KEY);
1843         if (!key_attr)
1844                 return -1;
1845
1846         if (defkey && alg == WPA_ALG_IGTK)
1847                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT_MGMT);
1848         else if (defkey)
1849                 NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1850
1851         NLA_PUT_U8(msg, NL80211_KEY_IDX, key_idx);
1852
1853         switch (alg) {
1854         case WPA_ALG_WEP:
1855                 if (key_len == 5)
1856                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1857                                     WLAN_CIPHER_SUITE_WEP40);
1858                 else
1859                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1860                                     WLAN_CIPHER_SUITE_WEP104);
1861                 break;
1862         case WPA_ALG_TKIP:
1863                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_TKIP);
1864                 break;
1865         case WPA_ALG_CCMP:
1866                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER, WLAN_CIPHER_SUITE_CCMP);
1867                 break;
1868         case WPA_ALG_IGTK:
1869                 NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1870                             WLAN_CIPHER_SUITE_AES_CMAC);
1871                 break;
1872         default:
1873                 wpa_printf(MSG_ERROR, "%s: Unsupported encryption "
1874                            "algorithm %d", __func__, alg);
1875                 return -1;
1876         }
1877
1878         if (seq && seq_len)
1879                 NLA_PUT(msg, NL80211_KEY_SEQ, seq_len, seq);
1880
1881         NLA_PUT(msg, NL80211_KEY_DATA, key_len, key);
1882
1883         nla_nest_end(msg, key_attr);
1884
1885         return 0;
1886  nla_put_failure:
1887         return -1;
1888 }
1889
1890
1891 static int nl80211_set_conn_keys(struct wpa_driver_associate_params *params,
1892                                  struct nl_msg *msg)
1893 {
1894         int i, privacy = 0;
1895         struct nlattr *nl_keys, *nl_key;
1896
1897         for (i = 0; i < 4; i++) {
1898                 if (!params->wep_key[i])
1899                         continue;
1900                 privacy = 1;
1901                 break;
1902         }
1903         if (!privacy)
1904                 return 0;
1905
1906         NLA_PUT_FLAG(msg, NL80211_ATTR_PRIVACY);
1907
1908         nl_keys = nla_nest_start(msg, NL80211_ATTR_KEYS);
1909         if (!nl_keys)
1910                 goto nla_put_failure;
1911
1912         for (i = 0; i < 4; i++) {
1913                 if (!params->wep_key[i])
1914                         continue;
1915
1916                 nl_key = nla_nest_start(msg, i);
1917                 if (!nl_key)
1918                         goto nla_put_failure;
1919
1920                 NLA_PUT(msg, NL80211_KEY_DATA, params->wep_key_len[i],
1921                         params->wep_key[i]);
1922                 if (params->wep_key_len[i] == 5)
1923                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1924                                     WLAN_CIPHER_SUITE_WEP40);
1925                 else
1926                         NLA_PUT_U32(msg, NL80211_KEY_CIPHER,
1927                                     WLAN_CIPHER_SUITE_WEP104);
1928
1929                 NLA_PUT_U8(msg, NL80211_KEY_IDX, i);
1930
1931                 if (i == params->wep_tx_keyidx)
1932                         NLA_PUT_FLAG(msg, NL80211_KEY_DEFAULT);
1933
1934                 nla_nest_end(msg, nl_key);
1935         }
1936         nla_nest_end(msg, nl_keys);
1937
1938         return 0;
1939
1940 nla_put_failure:
1941         return -ENOBUFS;
1942 }
1943
1944
1945 static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv,
1946                                    const u8 *addr, int cmd, u16 reason_code)
1947 {
1948         int ret = -1;
1949         struct nl_msg *msg;
1950
1951         msg = nlmsg_alloc();
1952         if (!msg)
1953                 return -1;
1954
1955         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0, cmd, 0);
1956
1957         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
1958         NLA_PUT_U16(msg, NL80211_ATTR_REASON_CODE, reason_code);
1959         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
1960
1961         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
1962         msg = NULL;
1963         if (ret) {
1964                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
1965                            "(%s)", ret, strerror(-ret));
1966                 goto nla_put_failure;
1967         }
1968         ret = 0;
1969
1970 nla_put_failure:
1971         nlmsg_free(msg);
1972         return ret;
1973 }
1974
1975
1976 static int wpa_driver_nl80211_disconnect(struct wpa_driver_nl80211_data *drv,
1977                                          const u8 *addr, int reason_code)
1978 {
1979         wpa_printf(MSG_DEBUG, "%s", __func__);
1980         drv->associated = 0;
1981         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISCONNECT,
1982                                        reason_code);
1983 }
1984
1985
1986 static int wpa_driver_nl80211_deauthenticate(void *priv, const u8 *addr,
1987                                              int reason_code)
1988 {
1989         struct wpa_driver_nl80211_data *drv = priv;
1990         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
1991                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
1992         wpa_printf(MSG_DEBUG, "%s", __func__);
1993         drv->associated = 0;
1994         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DEAUTHENTICATE,
1995                                        reason_code);
1996 }
1997
1998
1999 static int wpa_driver_nl80211_disassociate(void *priv, const u8 *addr,
2000                                            int reason_code)
2001 {
2002         struct wpa_driver_nl80211_data *drv = priv;
2003         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME))
2004                 return wpa_driver_nl80211_disconnect(drv, addr, reason_code);
2005         wpa_printf(MSG_DEBUG, "%s", __func__);
2006         drv->associated = 0;
2007         return wpa_driver_nl80211_mlme(drv, addr, NL80211_CMD_DISASSOCIATE,
2008                                        reason_code);
2009 }
2010
2011
2012 static int wpa_driver_nl80211_authenticate(
2013         void *priv, struct wpa_driver_auth_params *params)
2014 {
2015         struct wpa_driver_nl80211_data *drv = priv;
2016         int ret = -1, i;
2017         struct nl_msg *msg;
2018         enum nl80211_auth_type type;
2019         int count = 0;
2020
2021         drv->associated = 0;
2022         os_memset(drv->auth_bssid, 0, ETH_ALEN);
2023
2024         if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_INFRA) < 0)
2025                 return -1;
2026
2027 retry:
2028         msg = nlmsg_alloc();
2029         if (!msg)
2030                 return -1;
2031
2032         wpa_printf(MSG_DEBUG, "nl80211: Authenticate (ifindex=%d)",
2033                    drv->ifindex);
2034
2035         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2036                     NL80211_CMD_AUTHENTICATE, 0);
2037
2038         for (i = 0; i < 4; i++) {
2039                 if (!params->wep_key[i])
2040                         continue;
2041                 wpa_driver_nl80211_set_key(drv->ifname, drv, WPA_ALG_WEP, NULL,
2042                                            i,
2043                                            i == params->wep_tx_keyidx, NULL, 0,
2044                                            params->wep_key[i],
2045                                            params->wep_key_len[i]);
2046                 if (params->wep_tx_keyidx != i)
2047                         continue;
2048                 if (nl_add_key(msg, WPA_ALG_WEP, i, 1, NULL, 0,
2049                                params->wep_key[i], params->wep_key_len[i])) {
2050                         nlmsg_free(msg);
2051                         return -1;
2052                 }
2053         }
2054
2055         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2056         if (params->bssid) {
2057                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
2058                            MAC2STR(params->bssid));
2059                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
2060         }
2061         if (params->freq) {
2062                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
2063                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
2064         }
2065         if (params->ssid) {
2066                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
2067                                   params->ssid, params->ssid_len);
2068                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
2069                         params->ssid);
2070         }
2071         wpa_hexdump(MSG_DEBUG, "  * IEs", params->ie, params->ie_len);
2072         if (params->ie)
2073                 NLA_PUT(msg, NL80211_ATTR_IE, params->ie_len, params->ie);
2074         /*
2075          * TODO: if multiple auth_alg options enabled, try them one by one if
2076          * the AP rejects authentication due to unknown auth alg
2077          */
2078         if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
2079                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
2080         else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
2081                 type = NL80211_AUTHTYPE_SHARED_KEY;
2082         else if (params->auth_alg & AUTH_ALG_LEAP)
2083                 type = NL80211_AUTHTYPE_NETWORK_EAP;
2084         else if (params->auth_alg & AUTH_ALG_FT)
2085                 type = NL80211_AUTHTYPE_FT;
2086         else
2087                 goto nla_put_failure;
2088         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
2089         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
2090
2091         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2092         msg = NULL;
2093         if (ret) {
2094                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
2095                            "(%s)", ret, strerror(-ret));
2096                 count++;
2097                 if (ret == -EALREADY && count == 1 && params->bssid) {
2098                         /*
2099                          * mac80211 does not currently accept new
2100                          * authentication if we are already authenticated. As a
2101                          * workaround, force deauthentication and try again.
2102                          */
2103                         wpa_printf(MSG_DEBUG, "nl80211: Retry authentication "
2104                                    "after forced deauthentication");
2105                         wpa_driver_nl80211_deauthenticate(
2106                                 drv, params->bssid,
2107                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
2108                         nlmsg_free(msg);
2109                         goto retry;
2110                 }
2111                 goto nla_put_failure;
2112         }
2113         ret = 0;
2114         wpa_printf(MSG_DEBUG, "nl80211: Authentication request send "
2115                    "successfully");
2116
2117 nla_put_failure:
2118         nlmsg_free(msg);
2119         return ret;
2120 }
2121
2122
2123 struct phy_info_arg {
2124         u16 *num_modes;
2125         struct hostapd_hw_modes *modes;
2126 };
2127
2128 static int phy_info_handler(struct nl_msg *msg, void *arg)
2129 {
2130         struct nlattr *tb_msg[NL80211_ATTR_MAX + 1];
2131         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
2132         struct phy_info_arg *phy_info = arg;
2133
2134         struct nlattr *tb_band[NL80211_BAND_ATTR_MAX + 1];
2135
2136         struct nlattr *tb_freq[NL80211_FREQUENCY_ATTR_MAX + 1];
2137         static struct nla_policy freq_policy[NL80211_FREQUENCY_ATTR_MAX + 1] = {
2138                 [NL80211_FREQUENCY_ATTR_FREQ] = { .type = NLA_U32 },
2139                 [NL80211_FREQUENCY_ATTR_DISABLED] = { .type = NLA_FLAG },
2140                 [NL80211_FREQUENCY_ATTR_PASSIVE_SCAN] = { .type = NLA_FLAG },
2141                 [NL80211_FREQUENCY_ATTR_NO_IBSS] = { .type = NLA_FLAG },
2142                 [NL80211_FREQUENCY_ATTR_RADAR] = { .type = NLA_FLAG },
2143                 [NL80211_FREQUENCY_ATTR_MAX_TX_POWER] = { .type = NLA_U32 },
2144         };
2145
2146         struct nlattr *tb_rate[NL80211_BITRATE_ATTR_MAX + 1];
2147         static struct nla_policy rate_policy[NL80211_BITRATE_ATTR_MAX + 1] = {
2148                 [NL80211_BITRATE_ATTR_RATE] = { .type = NLA_U32 },
2149                 [NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE] = { .type = NLA_FLAG },
2150         };
2151
2152         struct nlattr *nl_band;
2153         struct nlattr *nl_freq;
2154         struct nlattr *nl_rate;
2155         int rem_band, rem_freq, rem_rate;
2156         struct hostapd_hw_modes *mode;
2157         int idx, mode_is_set;
2158
2159         nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
2160                   genlmsg_attrlen(gnlh, 0), NULL);
2161
2162         if (!tb_msg[NL80211_ATTR_WIPHY_BANDS])
2163                 return NL_SKIP;
2164
2165         nla_for_each_nested(nl_band, tb_msg[NL80211_ATTR_WIPHY_BANDS], rem_band) {
2166                 mode = os_realloc(phy_info->modes, (*phy_info->num_modes + 1) * sizeof(*mode));
2167                 if (!mode)
2168                         return NL_SKIP;
2169                 phy_info->modes = mode;
2170
2171                 mode_is_set = 0;
2172
2173                 mode = &phy_info->modes[*(phy_info->num_modes)];
2174                 memset(mode, 0, sizeof(*mode));
2175                 *(phy_info->num_modes) += 1;
2176
2177                 nla_parse(tb_band, NL80211_BAND_ATTR_MAX, nla_data(nl_band),
2178                           nla_len(nl_band), NULL);
2179
2180                 if (tb_band[NL80211_BAND_ATTR_HT_CAPA]) {
2181                         mode->ht_capab = nla_get_u16(
2182                                 tb_band[NL80211_BAND_ATTR_HT_CAPA]);
2183                 }
2184
2185                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) {
2186                         mode->a_mpdu_params |= nla_get_u8(
2187                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_FACTOR]) &
2188                                 0x03;
2189                 }
2190
2191                 if (tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) {
2192                         mode->a_mpdu_params |= nla_get_u8(
2193                                 tb_band[NL80211_BAND_ATTR_HT_AMPDU_DENSITY]) <<
2194                                 2;
2195                 }
2196
2197                 if (tb_band[NL80211_BAND_ATTR_HT_MCS_SET] &&
2198                     nla_len(tb_band[NL80211_BAND_ATTR_HT_MCS_SET])) {
2199                         u8 *mcs;
2200                         mcs = nla_data(tb_band[NL80211_BAND_ATTR_HT_MCS_SET]);
2201                         os_memcpy(mode->mcs_set, mcs, 16);
2202                 }
2203
2204                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2205                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2206                                   nla_len(nl_freq), freq_policy);
2207                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2208                                 continue;
2209                         mode->num_channels++;
2210                 }
2211
2212                 mode->channels = os_zalloc(mode->num_channels * sizeof(struct hostapd_channel_data));
2213                 if (!mode->channels)
2214                         return NL_SKIP;
2215
2216                 idx = 0;
2217
2218                 nla_for_each_nested(nl_freq, tb_band[NL80211_BAND_ATTR_FREQS], rem_freq) {
2219                         nla_parse(tb_freq, NL80211_FREQUENCY_ATTR_MAX, nla_data(nl_freq),
2220                                   nla_len(nl_freq), freq_policy);
2221                         if (!tb_freq[NL80211_FREQUENCY_ATTR_FREQ])
2222                                 continue;
2223
2224                         mode->channels[idx].freq = nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_FREQ]);
2225                         mode->channels[idx].flag = 0;
2226
2227                         if (!mode_is_set) {
2228                                 /* crude heuristic */
2229                                 if (mode->channels[idx].freq < 4000)
2230                                         mode->mode = HOSTAPD_MODE_IEEE80211B;
2231                                 else
2232                                         mode->mode = HOSTAPD_MODE_IEEE80211A;
2233                                 mode_is_set = 1;
2234                         }
2235
2236                         /* crude heuristic */
2237                         if (mode->channels[idx].freq < 4000)
2238                                 if (mode->channels[idx].freq == 2484)
2239                                         mode->channels[idx].chan = 14;
2240                                 else
2241                                         mode->channels[idx].chan = (mode->channels[idx].freq - 2407) / 5;
2242                         else
2243                                 mode->channels[idx].chan = mode->channels[idx].freq/5 - 1000;
2244
2245                         if (tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2246                                 mode->channels[idx].flag |=
2247                                         HOSTAPD_CHAN_DISABLED;
2248                         if (tb_freq[NL80211_FREQUENCY_ATTR_PASSIVE_SCAN])
2249                                 mode->channels[idx].flag |=
2250                                         HOSTAPD_CHAN_PASSIVE_SCAN;
2251                         if (tb_freq[NL80211_FREQUENCY_ATTR_NO_IBSS])
2252                                 mode->channels[idx].flag |=
2253                                         HOSTAPD_CHAN_NO_IBSS;
2254                         if (tb_freq[NL80211_FREQUENCY_ATTR_RADAR])
2255                                 mode->channels[idx].flag |=
2256                                         HOSTAPD_CHAN_RADAR;
2257
2258                         if (tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER] &&
2259                             !tb_freq[NL80211_FREQUENCY_ATTR_DISABLED])
2260                                 mode->channels[idx].max_tx_power =
2261                                         nla_get_u32(tb_freq[NL80211_FREQUENCY_ATTR_MAX_TX_POWER]) / 100;
2262
2263                         idx++;
2264                 }
2265
2266                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2267                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2268                                   nla_len(nl_rate), rate_policy);
2269                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2270                                 continue;
2271                         mode->num_rates++;
2272                 }
2273
2274                 mode->rates = os_zalloc(mode->num_rates * sizeof(int));
2275                 if (!mode->rates)
2276                         return NL_SKIP;
2277
2278                 idx = 0;
2279
2280                 nla_for_each_nested(nl_rate, tb_band[NL80211_BAND_ATTR_RATES], rem_rate) {
2281                         nla_parse(tb_rate, NL80211_BITRATE_ATTR_MAX, nla_data(nl_rate),
2282                                   nla_len(nl_rate), rate_policy);
2283                         if (!tb_rate[NL80211_BITRATE_ATTR_RATE])
2284                                 continue;
2285                         mode->rates[idx] = nla_get_u32(tb_rate[NL80211_BITRATE_ATTR_RATE]);
2286
2287                         /* crude heuristic */
2288                         if (mode->mode == HOSTAPD_MODE_IEEE80211B &&
2289                             mode->rates[idx] > 200)
2290                                 mode->mode = HOSTAPD_MODE_IEEE80211G;
2291
2292                         idx++;
2293                 }
2294         }
2295
2296         return NL_SKIP;
2297 }
2298
2299 static struct hostapd_hw_modes *
2300 wpa_driver_nl80211_add_11b(struct hostapd_hw_modes *modes, u16 *num_modes)
2301 {
2302         u16 m;
2303         struct hostapd_hw_modes *mode11g = NULL, *nmodes, *mode;
2304         int i, mode11g_idx = -1;
2305
2306         /* If only 802.11g mode is included, use it to construct matching
2307          * 802.11b mode data. */
2308
2309         for (m = 0; m < *num_modes; m++) {
2310                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211B)
2311                         return modes; /* 802.11b already included */
2312                 if (modes[m].mode == HOSTAPD_MODE_IEEE80211G)
2313                         mode11g_idx = m;
2314         }
2315
2316         if (mode11g_idx < 0)
2317                 return modes; /* 2.4 GHz band not supported at all */
2318
2319         nmodes = os_realloc(modes, (*num_modes + 1) * sizeof(*nmodes));
2320         if (nmodes == NULL)
2321                 return modes; /* Could not add 802.11b mode */
2322
2323         mode = &nmodes[*num_modes];
2324         os_memset(mode, 0, sizeof(*mode));
2325         (*num_modes)++;
2326         modes = nmodes;
2327
2328         mode->mode = HOSTAPD_MODE_IEEE80211B;
2329
2330         mode11g = &modes[mode11g_idx];
2331         mode->num_channels = mode11g->num_channels;
2332         mode->channels = os_malloc(mode11g->num_channels *
2333                                    sizeof(struct hostapd_channel_data));
2334         if (mode->channels == NULL) {
2335                 (*num_modes)--;
2336                 return modes; /* Could not add 802.11b mode */
2337         }
2338         os_memcpy(mode->channels, mode11g->channels,
2339                   mode11g->num_channels * sizeof(struct hostapd_channel_data));
2340
2341         mode->num_rates = 0;
2342         mode->rates = os_malloc(4 * sizeof(int));
2343         if (mode->rates == NULL) {
2344                 os_free(mode->channels);
2345                 (*num_modes)--;
2346                 return modes; /* Could not add 802.11b mode */
2347         }
2348
2349         for (i = 0; i < mode11g->num_rates; i++) {
2350                 if (mode11g->rates[i] != 10 && mode11g->rates[i] != 20 &&
2351                     mode11g->rates[i] != 55 && mode11g->rates[i] != 110)
2352                         continue;
2353                 mode->rates[mode->num_rates] = mode11g->rates[i];
2354                 mode->num_rates++;
2355                 if (mode->num_rates == 4)
2356                         break;
2357         }
2358
2359         if (mode->num_rates == 0) {
2360                 os_free(mode->channels);
2361                 os_free(mode->rates);
2362                 (*num_modes)--;
2363                 return modes; /* No 802.11b rates */
2364         }
2365
2366         wpa_printf(MSG_DEBUG, "nl80211: Added 802.11b mode based on 802.11g "
2367                    "information");
2368
2369         return modes;
2370 }
2371
2372
2373 static struct hostapd_hw_modes *
2374 wpa_driver_nl80211_get_hw_feature_data(void *priv, u16 *num_modes, u16 *flags)
2375 {
2376         struct wpa_driver_nl80211_data *drv = priv;
2377         struct nl_msg *msg;
2378         struct phy_info_arg result = {
2379                 .num_modes = num_modes,
2380                 .modes = NULL,
2381         };
2382
2383         *num_modes = 0;
2384         *flags = 0;
2385
2386         msg = nlmsg_alloc();
2387         if (!msg)
2388                 return NULL;
2389
2390         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2391                     0, NL80211_CMD_GET_WIPHY, 0);
2392
2393         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2394
2395         if (send_and_recv_msgs(drv, msg, phy_info_handler, &result) == 0)
2396                 return wpa_driver_nl80211_add_11b(result.modes, num_modes);
2397  nla_put_failure:
2398         return NULL;
2399 }
2400
2401
2402 static int wpa_driver_nl80211_send_frame(struct wpa_driver_nl80211_data *drv,
2403                                          const void *data, size_t len,
2404                                          int encrypt)
2405 {
2406         __u8 rtap_hdr[] = {
2407                 0x00, 0x00, /* radiotap version */
2408                 0x0e, 0x00, /* radiotap length */
2409                 0x02, 0xc0, 0x00, 0x00, /* bmap: flags, tx and rx flags */
2410                 IEEE80211_RADIOTAP_F_FRAG, /* F_FRAG (fragment if required) */
2411                 0x00,       /* padding */
2412                 0x00, 0x00, /* RX and TX flags to indicate that */
2413                 0x00, 0x00, /* this is the injected frame directly */
2414         };
2415         struct iovec iov[2] = {
2416                 {
2417                         .iov_base = &rtap_hdr,
2418                         .iov_len = sizeof(rtap_hdr),
2419                 },
2420                 {
2421                         .iov_base = (void *) data,
2422                         .iov_len = len,
2423                 }
2424         };
2425         struct msghdr msg = {
2426                 .msg_name = NULL,
2427                 .msg_namelen = 0,
2428                 .msg_iov = iov,
2429                 .msg_iovlen = 2,
2430                 .msg_control = NULL,
2431                 .msg_controllen = 0,
2432                 .msg_flags = 0,
2433         };
2434
2435         if (encrypt)
2436                 rtap_hdr[8] |= IEEE80211_RADIOTAP_F_WEP;
2437
2438         return sendmsg(drv->monitor_sock, &msg, 0);
2439 }
2440
2441
2442 static int wpa_driver_nl80211_send_mlme(void *priv, const u8 *data,
2443                                         size_t data_len)
2444 {
2445         struct wpa_driver_nl80211_data *drv = priv;
2446         struct ieee80211_mgmt *mgmt;
2447         int encrypt = 1;
2448         u16 fc;
2449
2450         mgmt = (struct ieee80211_mgmt *) data;
2451         fc = le_to_host16(mgmt->frame_control);
2452
2453         if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2454             WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_AUTH) {
2455                 /*
2456                  * Only one of the authentication frame types is encrypted.
2457                  * In order for static WEP encryption to work properly (i.e.,
2458                  * to not encrypt the frame), we need to tell mac80211 about
2459                  * the frames that must not be encrypted.
2460                  */
2461                 u16 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2462                 u16 auth_trans = le_to_host16(mgmt->u.auth.auth_transaction);
2463                 if (auth_alg != WLAN_AUTH_SHARED_KEY || auth_trans != 3)
2464                         encrypt = 0;
2465         }
2466
2467         return wpa_driver_nl80211_send_frame(drv, data, data_len, encrypt);
2468 }
2469
2470
2471 static int wpa_driver_nl80211_set_beacon(const char *ifname, void *priv,
2472                                          const u8 *head, size_t head_len,
2473                                          const u8 *tail, size_t tail_len,
2474                                          int dtim_period, int beacon_int)
2475 {
2476         struct wpa_driver_nl80211_data *drv = priv;
2477         struct nl_msg *msg;
2478         u8 cmd = NL80211_CMD_NEW_BEACON;
2479         int ret;
2480         int beacon_set;
2481         int ifindex = if_nametoindex(ifname);
2482 #ifdef HOSTAPD
2483         struct i802_bss *bss;
2484
2485         bss = get_bss(drv, ifindex);
2486         if (bss == NULL)
2487                 return -ENOENT;
2488         beacon_set = bss->beacon_set;
2489 #else /* HOSTAPD */
2490         beacon_set = drv->beacon_set;
2491 #endif /* HOSTAPD */
2492
2493         msg = nlmsg_alloc();
2494         if (!msg)
2495                 return -ENOMEM;
2496
2497         wpa_printf(MSG_DEBUG, "nl80211: Set beacon (beacon_set=%d)",
2498                    beacon_set);
2499         if (beacon_set)
2500                 cmd = NL80211_CMD_SET_BEACON;
2501
2502         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2503                     0, cmd, 0);
2504         NLA_PUT(msg, NL80211_ATTR_BEACON_HEAD, head_len, head);
2505         NLA_PUT(msg, NL80211_ATTR_BEACON_TAIL, tail_len, tail);
2506         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
2507         NLA_PUT_U32(msg, NL80211_ATTR_BEACON_INTERVAL, beacon_int);
2508         NLA_PUT_U32(msg, NL80211_ATTR_DTIM_PERIOD, dtim_period);
2509
2510         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2511         if (ret) {
2512                 wpa_printf(MSG_DEBUG, "nl80211: Beacon set failed: %d (%s)",
2513                            ret, strerror(-ret));
2514         } else {
2515 #ifdef HOSTAPD
2516                 bss->beacon_set = 1;
2517 #else /* HOSTAPD */
2518                 drv->beacon_set = 1;
2519 #endif /* HOSTAPD */
2520         }
2521         return ret;
2522  nla_put_failure:
2523         return -ENOBUFS;
2524 }
2525
2526
2527 static int wpa_driver_nl80211_set_freq(struct wpa_driver_nl80211_data *drv,
2528                                        int freq, int ht_enabled,
2529                                        int sec_channel_offset)
2530 {
2531         struct nl_msg *msg;
2532         int ret;
2533
2534         msg = nlmsg_alloc();
2535         if (!msg)
2536                 return -1;
2537
2538         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
2539                     NL80211_CMD_SET_WIPHY, 0);
2540
2541         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2542         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
2543         if (ht_enabled) {
2544                 switch (sec_channel_offset) {
2545                 case -1:
2546                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2547                                     NL80211_CHAN_HT40MINUS);
2548                         break;
2549                 case 1:
2550                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2551                                     NL80211_CHAN_HT40PLUS);
2552                         break;
2553                 default:
2554                         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE,
2555                                     NL80211_CHAN_HT20);
2556                         break;
2557                 }
2558         }
2559
2560         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2561         if (ret == 0)
2562                 return 0;
2563         wpa_printf(MSG_DEBUG, "nl80211: Failed to set channel (freq=%d): "
2564                    "%d (%s)", freq, ret, strerror(-ret));
2565 nla_put_failure:
2566         return -1;
2567 }
2568
2569
2570 static int wpa_driver_nl80211_sta_add(const char *ifname, void *priv,
2571                                       struct hostapd_sta_add_params *params)
2572 {
2573         struct wpa_driver_nl80211_data *drv = priv;
2574         struct nl_msg *msg;
2575         int ret = -ENOBUFS;
2576
2577         msg = nlmsg_alloc();
2578         if (!msg)
2579                 return -ENOMEM;
2580
2581         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2582                     0, NL80211_CMD_NEW_STATION, 0);
2583
2584         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(ifname));
2585         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->addr);
2586         NLA_PUT_U16(msg, NL80211_ATTR_STA_AID, params->aid);
2587         NLA_PUT(msg, NL80211_ATTR_STA_SUPPORTED_RATES, params->supp_rates_len,
2588                 params->supp_rates);
2589         NLA_PUT_U16(msg, NL80211_ATTR_STA_LISTEN_INTERVAL,
2590                     params->listen_interval);
2591         if (params->ht_capabilities) {
2592                 NLA_PUT(msg, NL80211_ATTR_HT_CAPABILITY,
2593                         sizeof(*params->ht_capabilities),
2594                         params->ht_capabilities);
2595         }
2596
2597         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2598         if (ret)
2599                 wpa_printf(MSG_DEBUG, "nl80211: NL80211_CMD_NEW_STATION "
2600                            "result: %d (%s)", ret, strerror(-ret));
2601         if (ret == -EEXIST)
2602                 ret = 0;
2603  nla_put_failure:
2604         return ret;
2605 }
2606
2607
2608 static int wpa_driver_nl80211_sta_remove(void *priv, const u8 *addr)
2609 {
2610         struct wpa_driver_nl80211_data *drv = priv;
2611         struct nl_msg *msg;
2612         int ret;
2613
2614         msg = nlmsg_alloc();
2615         if (!msg)
2616                 return -ENOMEM;
2617
2618         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2619                     0, NL80211_CMD_DEL_STATION, 0);
2620
2621         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
2622                     if_nametoindex(drv->ifname));
2623         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
2624
2625         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2626         if (ret == -ENOENT)
2627                 return 0;
2628         return ret;
2629  nla_put_failure:
2630         return -ENOBUFS;
2631 }
2632
2633
2634 static void nl80211_remove_iface(struct wpa_driver_nl80211_data *drv,
2635                                  int ifidx)
2636 {
2637         struct nl_msg *msg;
2638
2639         wpa_printf(MSG_DEBUG, "nl80211: Remove interface ifindex=%d", ifidx);
2640
2641 #ifdef HOSTAPD
2642         /* stop listening for EAPOL on this interface */
2643         del_ifidx(drv, ifidx);
2644 #endif /* HOSTAPD */
2645
2646         msg = nlmsg_alloc();
2647         if (!msg)
2648                 goto nla_put_failure;
2649
2650         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2651                     0, NL80211_CMD_DEL_INTERFACE, 0);
2652         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifidx);
2653
2654         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
2655                 return;
2656  nla_put_failure:
2657         wpa_printf(MSG_ERROR, "Failed to remove interface (ifidx=%d).\n",
2658                    ifidx);
2659 }
2660
2661
2662 static int nl80211_create_iface_once(struct wpa_driver_nl80211_data *drv,
2663                                      const char *ifname,
2664                                      enum nl80211_iftype iftype,
2665                                      const u8 *addr, int wds)
2666 {
2667         struct nl_msg *msg, *flags = NULL;
2668         int ifidx;
2669         int ret = -ENOBUFS;
2670
2671         msg = nlmsg_alloc();
2672         if (!msg)
2673                 return -1;
2674
2675         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
2676                     0, NL80211_CMD_NEW_INTERFACE, 0);
2677         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
2678         NLA_PUT_STRING(msg, NL80211_ATTR_IFNAME, ifname);
2679         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, iftype);
2680
2681         if (iftype == NL80211_IFTYPE_MONITOR) {
2682                 int err;
2683
2684                 flags = nlmsg_alloc();
2685                 if (!flags)
2686                         goto nla_put_failure;
2687
2688                 NLA_PUT_FLAG(flags, NL80211_MNTR_FLAG_COOK_FRAMES);
2689
2690                 err = nla_put_nested(msg, NL80211_ATTR_MNTR_FLAGS, flags);
2691
2692                 nlmsg_free(flags);
2693
2694                 if (err)
2695                         goto nla_put_failure;
2696         } else if (wds) {
2697                 NLA_PUT_U8(msg, NL80211_ATTR_4ADDR, wds);
2698         }
2699
2700         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
2701         if (ret) {
2702  nla_put_failure:
2703                 wpa_printf(MSG_ERROR, "Failed to create interface %s: %d (%s)",
2704                            ifname, ret, strerror(-ret));
2705                 return ret;
2706         }
2707
2708         ifidx = if_nametoindex(ifname);
2709         wpa_printf(MSG_DEBUG, "nl80211: New interface %s created: ifindex=%d",
2710                    ifname, ifidx);
2711
2712         if (ifidx <= 0)
2713                 return -1;
2714
2715 #ifdef HOSTAPD
2716         /* start listening for EAPOL on this interface */
2717         add_ifidx(drv, ifidx);
2718 #endif /* HOSTAPD */
2719
2720         if (addr && iftype != NL80211_IFTYPE_MONITOR &&
2721             set_ifhwaddr(drv, ifname, addr)) {
2722                 nl80211_remove_iface(drv, ifidx);
2723                 return -1;
2724         }
2725
2726         return ifidx;
2727 }
2728
2729
2730 static int nl80211_create_iface(struct wpa_driver_nl80211_data *drv,
2731                                 const char *ifname, enum nl80211_iftype iftype,
2732                                 const u8 *addr, int wds)
2733 {
2734         int ret;
2735
2736         ret = nl80211_create_iface_once(drv, ifname, iftype, addr, wds);
2737
2738         /* if error occured and interface exists already */
2739         if (ret == -ENFILE && if_nametoindex(ifname)) {
2740                 wpa_printf(MSG_INFO, "Try to remove and re-create %s", ifname);
2741
2742                 /* Try to remove the interface that was already there. */
2743                 nl80211_remove_iface(drv, if_nametoindex(ifname));
2744
2745                 /* Try to create the interface again */
2746                 ret = nl80211_create_iface_once(drv, ifname, iftype, addr,
2747                                                 wds);
2748         }
2749
2750         return ret;
2751 }
2752
2753
2754 static void handle_tx_callback(void *ctx, u8 *buf, size_t len, int ok)
2755 {
2756         struct ieee80211_hdr *hdr;
2757         u16 fc;
2758         union wpa_event_data event;
2759
2760         hdr = (struct ieee80211_hdr *) buf;
2761         fc = le_to_host16(hdr->frame_control);
2762
2763         os_memset(&event, 0, sizeof(event));
2764         event.tx_status.type = WLAN_FC_GET_TYPE(fc);
2765         event.tx_status.stype = WLAN_FC_GET_STYPE(fc);
2766         event.tx_status.dst = hdr->addr1;
2767         event.tx_status.data = buf;
2768         event.tx_status.data_len = len;
2769         event.tx_status.ack = ok;
2770         wpa_supplicant_event(ctx, EVENT_TX_STATUS, &event);
2771 }
2772
2773
2774 static void from_unknown_sta(struct wpa_driver_nl80211_data *drv,
2775                              u8 *buf, size_t len)
2776 {
2777         union wpa_event_data event;
2778         os_memset(&event, 0, sizeof(event));
2779         event.rx_from_unknown.frame = buf;
2780         event.rx_from_unknown.len = len;
2781         wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event);
2782 }
2783
2784
2785 static void handle_frame(struct wpa_driver_nl80211_data *drv,
2786                          u8 *buf, size_t len, int datarate, int ssi_signal)
2787 {
2788         struct ieee80211_hdr *hdr;
2789         u16 fc;
2790         union wpa_event_data event;
2791
2792         hdr = (struct ieee80211_hdr *) buf;
2793         fc = le_to_host16(hdr->frame_control);
2794
2795         switch (WLAN_FC_GET_TYPE(fc)) {
2796         case WLAN_FC_TYPE_MGMT:
2797                 os_memset(&event, 0, sizeof(event));
2798                 event.rx_mgmt.frame = buf;
2799                 event.rx_mgmt.frame_len = len;
2800                 event.rx_mgmt.datarate = datarate;
2801                 event.rx_mgmt.ssi_signal = ssi_signal;
2802                 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event);
2803                 break;
2804         case WLAN_FC_TYPE_CTRL:
2805                 /* can only get here with PS-Poll frames */
2806                 wpa_printf(MSG_DEBUG, "CTRL");
2807                 from_unknown_sta(drv, buf, len);
2808                 break;
2809         case WLAN_FC_TYPE_DATA:
2810                 from_unknown_sta(drv, buf, len);
2811                 break;
2812         }
2813 }
2814
2815
2816 static void handle_monitor_read(int sock, void *eloop_ctx, void *sock_ctx)
2817 {
2818         struct wpa_driver_nl80211_data *drv = eloop_ctx;
2819         int len;
2820         unsigned char buf[3000];
2821         struct ieee80211_radiotap_iterator iter;
2822         int ret;
2823         int datarate = 0, ssi_signal = 0;
2824         int injected = 0, failed = 0, rxflags = 0;
2825
2826         len = recv(sock, buf, sizeof(buf), 0);
2827         if (len < 0) {
2828                 perror("recv");
2829                 return;
2830         }
2831
2832         if (drv->nlmode == NL80211_IFTYPE_STATION && !drv->probe_req_report) {
2833                 wpa_printf(MSG_DEBUG, "nl80211: Ignore monitor interface "
2834                            "frame since Probe Request reporting is disabled");
2835                 return;
2836         }
2837
2838         if (ieee80211_radiotap_iterator_init(&iter, (void*)buf, len)) {
2839                 printf("received invalid radiotap frame\n");
2840                 return;
2841         }
2842
2843         while (1) {
2844                 ret = ieee80211_radiotap_iterator_next(&iter);
2845                 if (ret == -ENOENT)
2846                         break;
2847                 if (ret) {
2848                         printf("received invalid radiotap frame (%d)\n", ret);
2849                         return;
2850                 }
2851                 switch (iter.this_arg_index) {
2852                 case IEEE80211_RADIOTAP_FLAGS:
2853                         if (*iter.this_arg & IEEE80211_RADIOTAP_F_FCS)
2854                                 len -= 4;
2855                         break;
2856                 case IEEE80211_RADIOTAP_RX_FLAGS:
2857                         rxflags = 1;
2858                         break;
2859                 case IEEE80211_RADIOTAP_TX_FLAGS:
2860                         injected = 1;
2861                         failed = le_to_host16((*(uint16_t *) iter.this_arg)) &
2862                                         IEEE80211_RADIOTAP_F_TX_FAIL;
2863                         break;
2864                 case IEEE80211_RADIOTAP_DATA_RETRIES:
2865                         break;
2866                 case IEEE80211_RADIOTAP_CHANNEL:
2867                         /* TODO: convert from freq/flags to channel number */
2868                         break;
2869                 case IEEE80211_RADIOTAP_RATE:
2870                         datarate = *iter.this_arg * 5;
2871                         break;
2872                 case IEEE80211_RADIOTAP_DB_ANTSIGNAL:
2873                         ssi_signal = *iter.this_arg;
2874                         break;
2875                 }
2876         }
2877
2878         if (rxflags && injected)
2879                 return;
2880
2881         if (!injected)
2882                 handle_frame(drv, buf + iter.max_length,
2883                              len - iter.max_length, datarate, ssi_signal);
2884         else
2885                 handle_tx_callback(drv->ctx, buf + iter.max_length,
2886                                    len - iter.max_length, !failed);
2887 }
2888
2889
2890 /*
2891  * we post-process the filter code later and rewrite
2892  * this to the offset to the last instruction
2893  */
2894 #define PASS    0xFF
2895 #define FAIL    0xFE
2896
2897 static struct sock_filter msock_filter_insns[] = {
2898         /*
2899          * do a little-endian load of the radiotap length field
2900          */
2901         /* load lower byte into A */
2902         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 2),
2903         /* put it into X (== index register) */
2904         BPF_STMT(BPF_MISC| BPF_TAX, 0),
2905         /* load upper byte into A */
2906         BPF_STMT(BPF_LD  | BPF_B | BPF_ABS, 3),
2907         /* left-shift it by 8 */
2908         BPF_STMT(BPF_ALU | BPF_LSH | BPF_K, 8),
2909         /* or with X */
2910         BPF_STMT(BPF_ALU | BPF_OR | BPF_X, 0),
2911         /* put result into X */
2912         BPF_STMT(BPF_MISC| BPF_TAX, 0),
2913
2914         /*
2915          * Allow management frames through, this also gives us those
2916          * management frames that we sent ourselves with status
2917          */
2918         /* load the lower byte of the IEEE 802.11 frame control field */
2919         BPF_STMT(BPF_LD  | BPF_B | BPF_IND, 0),
2920         /* mask off frame type and version */
2921         BPF_STMT(BPF_ALU | BPF_AND | BPF_K, 0xF),
2922         /* accept frame if it's both 0, fall through otherwise */
2923         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0, PASS, 0),
2924
2925         /*
2926          * TODO: add a bit to radiotap RX flags that indicates
2927          * that the sending station is not associated, then
2928          * add a filter here that filters on our DA and that flag
2929          * to allow us to deauth frames to that bad station.
2930          *
2931          * Not a regression -- we didn't do it before either.
2932          */
2933
2934 #if 0
2935         /*
2936          * drop non-data frames
2937          */
2938         /* load the lower byte of the frame control field */
2939         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
2940         /* mask off QoS bit */
2941         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x0c),
2942         /* drop non-data frames */
2943         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 8, 0, FAIL),
2944 #endif
2945         /* load the upper byte of the frame control field */
2946         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 1),
2947         /* mask off toDS/fromDS */
2948         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x03),
2949         /* accept WDS frames */
2950         BPF_JUMP(BPF_JMP  | BPF_JEQ | BPF_K, 3, PASS, 0),
2951
2952         /*
2953          * add header length to index
2954          */
2955         /* load the lower byte of the frame control field */
2956         BPF_STMT(BPF_LD   | BPF_B | BPF_IND, 0),
2957         /* mask off QoS bit */
2958         BPF_STMT(BPF_ALU  | BPF_AND | BPF_K, 0x80),
2959         /* right shift it by 6 to give 0 or 2 */
2960         BPF_STMT(BPF_ALU  | BPF_RSH | BPF_K, 6),
2961         /* add data frame header length */
2962         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_K, 24),
2963         /* add index, was start of 802.11 header */
2964         BPF_STMT(BPF_ALU  | BPF_ADD | BPF_X, 0),
2965         /* move to index, now start of LL header */
2966         BPF_STMT(BPF_MISC | BPF_TAX, 0),
2967
2968         /*
2969          * Accept empty data frames, we use those for
2970          * polling activity.
2971          */
2972         BPF_STMT(BPF_LD  | BPF_W | BPF_LEN, 0),
2973         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_X, 0, PASS, 0),
2974
2975         /*
2976          * Accept EAPOL frames
2977          */
2978         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 0),
2979         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0xAAAA0300, 0, FAIL),
2980         BPF_STMT(BPF_LD  | BPF_W | BPF_IND, 4),
2981         BPF_JUMP(BPF_JMP | BPF_JEQ | BPF_K, 0x0000888E, PASS, FAIL),
2982
2983         /* keep these last two statements or change the code below */
2984         /* return 0 == "DROP" */
2985         BPF_STMT(BPF_RET | BPF_K, 0),
2986         /* return ~0 == "keep all" */
2987         BPF_STMT(BPF_RET | BPF_K, ~0),
2988 };
2989
2990 static struct sock_fprog msock_filter = {
2991         .len = sizeof(msock_filter_insns)/sizeof(msock_filter_insns[0]),
2992         .filter = msock_filter_insns,
2993 };
2994
2995
2996 static int add_monitor_filter(int s)
2997 {
2998         int idx;
2999
3000         /* rewrite all PASS/FAIL jump offsets */
3001         for (idx = 0; idx < msock_filter.len; idx++) {
3002                 struct sock_filter *insn = &msock_filter_insns[idx];
3003
3004                 if (BPF_CLASS(insn->code) == BPF_JMP) {
3005                         if (insn->code == (BPF_JMP|BPF_JA)) {
3006                                 if (insn->k == PASS)
3007                                         insn->k = msock_filter.len - idx - 2;
3008                                 else if (insn->k == FAIL)
3009                                         insn->k = msock_filter.len - idx - 3;
3010                         }
3011
3012                         if (insn->jt == PASS)
3013                                 insn->jt = msock_filter.len - idx - 2;
3014                         else if (insn->jt == FAIL)
3015                                 insn->jt = msock_filter.len - idx - 3;
3016
3017                         if (insn->jf == PASS)
3018                                 insn->jf = msock_filter.len - idx - 2;
3019                         else if (insn->jf == FAIL)
3020                                 insn->jf = msock_filter.len - idx - 3;
3021                 }
3022         }
3023
3024         if (setsockopt(s, SOL_SOCKET, SO_ATTACH_FILTER,
3025                        &msock_filter, sizeof(msock_filter))) {
3026                 perror("SO_ATTACH_FILTER");
3027                 return -1;
3028         }
3029
3030         return 0;
3031 }
3032
3033
3034 static void nl80211_remove_monitor_interface(
3035         struct wpa_driver_nl80211_data *drv)
3036 {
3037         if (drv->monitor_ifidx >= 0) {
3038                 nl80211_remove_iface(drv, drv->monitor_ifidx);
3039                 drv->monitor_ifidx = -1;
3040         }
3041         if (drv->monitor_sock >= 0) {
3042                 eloop_unregister_read_sock(drv->monitor_sock);
3043                 close(drv->monitor_sock);
3044                 drv->monitor_sock = -1;
3045         }
3046 }
3047
3048
3049 static int
3050 nl80211_create_monitor_interface(struct wpa_driver_nl80211_data *drv)
3051 {
3052         char buf[IFNAMSIZ];
3053         struct sockaddr_ll ll;
3054         int optval;
3055         socklen_t optlen;
3056
3057         snprintf(buf, IFNAMSIZ, "mon.%s", drv->ifname);
3058         buf[IFNAMSIZ - 1] = '\0';
3059
3060         drv->monitor_ifidx =
3061                 nl80211_create_iface(drv, buf, NL80211_IFTYPE_MONITOR, NULL,
3062                                      0);
3063
3064         if (drv->monitor_ifidx < 0)
3065                 return -1;
3066
3067         if (hostapd_set_iface_flags(drv, buf, 1))
3068                 goto error;
3069
3070         memset(&ll, 0, sizeof(ll));
3071         ll.sll_family = AF_PACKET;
3072         ll.sll_ifindex = drv->monitor_ifidx;
3073         drv->monitor_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
3074         if (drv->monitor_sock < 0) {
3075                 perror("socket[PF_PACKET,SOCK_RAW]");
3076                 goto error;
3077         }
3078
3079         if (add_monitor_filter(drv->monitor_sock)) {
3080                 wpa_printf(MSG_INFO, "Failed to set socket filter for monitor "
3081                            "interface; do filtering in user space");
3082                 /* This works, but will cost in performance. */
3083         }
3084
3085         if (bind(drv->monitor_sock, (struct sockaddr *) &ll, sizeof(ll)) < 0) {
3086                 perror("monitor socket bind");
3087                 goto error;
3088         }
3089
3090         optlen = sizeof(optval);
3091         optval = 20;
3092         if (setsockopt
3093             (drv->monitor_sock, SOL_SOCKET, SO_PRIORITY, &optval, optlen)) {
3094                 perror("Failed to set socket priority");
3095                 goto error;
3096         }
3097
3098         if (eloop_register_read_sock(drv->monitor_sock, handle_monitor_read,
3099                                      drv, NULL)) {
3100                 printf("Could not register monitor read socket\n");
3101                 goto error;
3102         }
3103
3104         return 0;
3105  error:
3106         nl80211_remove_monitor_interface(drv);
3107         return -1;
3108 }
3109
3110
3111 static const u8 rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
3112
3113 static int wpa_driver_nl80211_hapd_send_eapol(
3114         void *priv, const u8 *addr, const u8 *data,
3115         size_t data_len, int encrypt, const u8 *own_addr)
3116 {
3117         struct wpa_driver_nl80211_data *drv = priv;
3118         struct ieee80211_hdr *hdr;
3119         size_t len;
3120         u8 *pos;
3121         int res;
3122 #if 0 /* FIX */
3123         int qos = sta->flags & WPA_STA_WMM;
3124 #else
3125         int qos = 0;
3126 #endif
3127
3128         len = sizeof(*hdr) + (qos ? 2 : 0) + sizeof(rfc1042_header) + 2 +
3129                 data_len;
3130         hdr = os_zalloc(len);
3131         if (hdr == NULL) {
3132                 printf("malloc() failed for i802_send_data(len=%lu)\n",
3133                        (unsigned long) len);
3134                 return -1;
3135         }
3136
3137         hdr->frame_control =
3138                 IEEE80211_FC(WLAN_FC_TYPE_DATA, WLAN_FC_STYPE_DATA);
3139         hdr->frame_control |= host_to_le16(WLAN_FC_FROMDS);
3140         if (encrypt)
3141                 hdr->frame_control |= host_to_le16(WLAN_FC_ISWEP);
3142 #if 0 /* To be enabled if qos determination is added above */
3143         if (qos) {
3144                 hdr->frame_control |=
3145                         host_to_le16(WLAN_FC_STYPE_QOS_DATA << 4);
3146         }
3147 #endif
3148
3149         memcpy(hdr->IEEE80211_DA_FROMDS, addr, ETH_ALEN);
3150         memcpy(hdr->IEEE80211_BSSID_FROMDS, own_addr, ETH_ALEN);
3151         memcpy(hdr->IEEE80211_SA_FROMDS, own_addr, ETH_ALEN);
3152         pos = (u8 *) (hdr + 1);
3153
3154 #if 0 /* To be enabled if qos determination is added above */
3155         if (qos) {
3156                 /* add an empty QoS header if needed */
3157                 pos[0] = 0;
3158                 pos[1] = 0;
3159                 pos += 2;
3160         }
3161 #endif
3162
3163         memcpy(pos, rfc1042_header, sizeof(rfc1042_header));
3164         pos += sizeof(rfc1042_header);
3165         WPA_PUT_BE16(pos, ETH_P_PAE);
3166         pos += 2;
3167         memcpy(pos, data, data_len);
3168
3169         res = wpa_driver_nl80211_send_frame(drv, (u8 *) hdr, len, encrypt);
3170         if (res < 0) {
3171                 wpa_printf(MSG_ERROR, "i802_send_eapol - packet len: %lu - "
3172                            "failed: %d (%s)",
3173                            (unsigned long) len, errno, strerror(errno));
3174         }
3175         os_free(hdr);
3176
3177         return res;
3178 }
3179
3180
3181 static u32 sta_flags_nl80211(int flags)
3182 {
3183         u32 f = 0;
3184
3185         if (flags & WPA_STA_AUTHORIZED)
3186                 f |= BIT(NL80211_STA_FLAG_AUTHORIZED);
3187         if (flags & WPA_STA_WMM)
3188                 f |= BIT(NL80211_STA_FLAG_WME);
3189         if (flags & WPA_STA_SHORT_PREAMBLE)
3190                 f |= BIT(NL80211_STA_FLAG_SHORT_PREAMBLE);
3191         if (flags & WPA_STA_MFP)
3192                 f |= BIT(NL80211_STA_FLAG_MFP);
3193
3194         return f;
3195 }
3196
3197
3198 static int wpa_driver_nl80211_sta_set_flags(void *priv, const u8 *addr,
3199                                             int total_flags, int flags_or,
3200                                             int flags_and)
3201 {
3202         struct wpa_driver_nl80211_data *drv = priv;
3203         struct nl_msg *msg, *flags = NULL;
3204         struct nl80211_sta_flag_update upd;
3205
3206         msg = nlmsg_alloc();
3207         if (!msg)
3208                 return -ENOMEM;
3209
3210         flags = nlmsg_alloc();
3211         if (!flags) {
3212                 nlmsg_free(msg);
3213                 return -ENOMEM;
3214         }
3215
3216         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3217                     0, NL80211_CMD_SET_STATION, 0);
3218
3219         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3220                     if_nametoindex(drv->ifname));
3221         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3222
3223         /*
3224          * Backwards compatibility version using NL80211_ATTR_STA_FLAGS. This
3225          * can be removed eventually.
3226          */
3227         if (total_flags & WPA_STA_AUTHORIZED)
3228                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_AUTHORIZED);
3229
3230         if (total_flags & WPA_STA_WMM)
3231                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_WME);
3232
3233         if (total_flags & WPA_STA_SHORT_PREAMBLE)
3234                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_SHORT_PREAMBLE);
3235
3236         if (total_flags & WPA_STA_MFP)
3237                 NLA_PUT_FLAG(flags, NL80211_STA_FLAG_MFP);
3238
3239         if (nla_put_nested(msg, NL80211_ATTR_STA_FLAGS, flags))
3240                 goto nla_put_failure;
3241
3242         os_memset(&upd, 0, sizeof(upd));
3243         upd.mask = sta_flags_nl80211(flags_or | ~flags_and);
3244         upd.set = sta_flags_nl80211(flags_or);
3245         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3246
3247         nlmsg_free(flags);
3248
3249         return send_and_recv_msgs(drv, msg, NULL, NULL);
3250  nla_put_failure:
3251         nlmsg_free(flags);
3252         return -ENOBUFS;
3253 }
3254
3255
3256 static int wpa_driver_nl80211_ap(struct wpa_driver_nl80211_data *drv,
3257                                  struct wpa_driver_associate_params *params)
3258 {
3259         if (wpa_driver_nl80211_set_mode(drv, params->mode) ||
3260             wpa_driver_nl80211_set_freq(drv, params->freq, 0, 0)) {
3261                 nl80211_remove_monitor_interface(drv);
3262                 return -1;
3263         }
3264
3265         /* TODO: setup monitor interface (and add code somewhere to remove this
3266          * when AP mode is stopped; associate with mode != 2 or drv_deinit) */
3267
3268         return 0;
3269 }
3270
3271
3272 static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv)
3273 {
3274         struct nl_msg *msg;
3275         int ret = -1;
3276
3277         msg = nlmsg_alloc();
3278         if (!msg)
3279                 return -1;
3280
3281         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3282                     NL80211_CMD_LEAVE_IBSS, 0);
3283         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3284         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3285         msg = NULL;
3286         if (ret) {
3287                 wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS failed: ret=%d "
3288                            "(%s)", ret, strerror(-ret));
3289                 goto nla_put_failure;
3290         }
3291
3292         ret = 0;
3293         wpa_printf(MSG_DEBUG, "nl80211: Leave IBSS request sent successfully");
3294
3295 nla_put_failure:
3296         nlmsg_free(msg);
3297         return ret;
3298 }
3299
3300
3301 static int wpa_driver_nl80211_ibss(struct wpa_driver_nl80211_data *drv,
3302                                    struct wpa_driver_associate_params *params)
3303 {
3304         struct nl_msg *msg;
3305         int ret = -1;
3306         int count = 0;
3307
3308         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS (ifindex=%d)", drv->ifindex);
3309
3310         if (wpa_driver_nl80211_set_mode(drv, params->mode)) {
3311                 wpa_printf(MSG_INFO, "nl80211: Failed to set interface into "
3312                            "IBSS mode");
3313                 return -1;
3314         }
3315
3316 retry:
3317         msg = nlmsg_alloc();
3318         if (!msg)
3319                 return -1;
3320
3321         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3322                     NL80211_CMD_JOIN_IBSS, 0);
3323         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3324
3325         if (params->ssid == NULL || params->ssid_len > sizeof(drv->ssid))
3326                 goto nla_put_failure;
3327
3328         wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3329                           params->ssid, params->ssid_len);
3330         NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3331                 params->ssid);
3332         os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3333         drv->ssid_len = params->ssid_len;
3334
3335         wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3336         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3337
3338         ret = nl80211_set_conn_keys(params, msg);
3339         if (ret)
3340                 goto nla_put_failure;
3341
3342         if (params->wpa_ie) {
3343                 wpa_hexdump(MSG_DEBUG,
3344                             "  * Extra IEs for Beacon/Probe Response frames",
3345                             params->wpa_ie, params->wpa_ie_len);
3346                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3347                         params->wpa_ie);
3348         }
3349
3350         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3351         msg = NULL;
3352         if (ret) {
3353                 wpa_printf(MSG_DEBUG, "nl80211: Join IBSS failed: ret=%d (%s)",
3354                            ret, strerror(-ret));
3355                 count++;
3356                 if (ret == -EALREADY && count == 1) {
3357                         wpa_printf(MSG_DEBUG, "nl80211: Retry IBSS join after "
3358                                    "forced leave");
3359                         nl80211_leave_ibss(drv);
3360                         nlmsg_free(msg);
3361                         goto retry;
3362                 }
3363
3364                 goto nla_put_failure;
3365         }
3366         ret = 0;
3367         wpa_printf(MSG_DEBUG, "nl80211: Join IBSS request sent successfully");
3368
3369 nla_put_failure:
3370         nlmsg_free(msg);
3371         return ret;
3372 }
3373
3374
3375 static int wpa_driver_nl80211_connect(
3376         struct wpa_driver_nl80211_data *drv,
3377         struct wpa_driver_associate_params *params)
3378 {
3379         struct nl_msg *msg;
3380         enum nl80211_auth_type type;
3381         int ret = 0;
3382
3383         msg = nlmsg_alloc();
3384         if (!msg)
3385                 return -1;
3386
3387         wpa_printf(MSG_DEBUG, "nl80211: Connect (ifindex=%d)", drv->ifindex);
3388         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3389                     NL80211_CMD_CONNECT, 0);
3390
3391         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3392         if (params->bssid) {
3393                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3394                            MAC2STR(params->bssid));
3395                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3396         }
3397         if (params->freq) {
3398                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3399                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3400         }
3401         if (params->ssid) {
3402                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3403                                   params->ssid, params->ssid_len);
3404                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3405                         params->ssid);
3406                 if (params->ssid_len > sizeof(drv->ssid))
3407                         goto nla_put_failure;
3408                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3409                 drv->ssid_len = params->ssid_len;
3410         }
3411         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3412         if (params->wpa_ie)
3413                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3414                         params->wpa_ie);
3415
3416         if (params->auth_alg & AUTH_ALG_OPEN_SYSTEM)
3417                 type = NL80211_AUTHTYPE_OPEN_SYSTEM;
3418         else if (params->auth_alg & AUTH_ALG_SHARED_KEY)
3419                 type = NL80211_AUTHTYPE_SHARED_KEY;
3420         else if (params->auth_alg & AUTH_ALG_LEAP)
3421                 type = NL80211_AUTHTYPE_NETWORK_EAP;
3422         else if (params->auth_alg & AUTH_ALG_FT)
3423                 type = NL80211_AUTHTYPE_FT;
3424         else
3425                 goto nla_put_failure;
3426
3427         wpa_printf(MSG_DEBUG, "  * Auth Type %d", type);
3428         NLA_PUT_U32(msg, NL80211_ATTR_AUTH_TYPE, type);
3429
3430         if (params->wpa_ie && params->wpa_ie_len) {
3431                 enum nl80211_wpa_versions ver;
3432
3433                 if (params->wpa_ie[0] == WLAN_EID_RSN)
3434                         ver = NL80211_WPA_VERSION_2;
3435                 else
3436                         ver = NL80211_WPA_VERSION_1;
3437
3438                 wpa_printf(MSG_DEBUG, "  * WPA Version %d", ver);
3439                 NLA_PUT_U32(msg, NL80211_ATTR_WPA_VERSIONS, ver);
3440         }
3441
3442         if (params->pairwise_suite != CIPHER_NONE) {
3443                 int cipher;
3444
3445                 switch (params->pairwise_suite) {
3446                 case CIPHER_WEP40:
3447                         cipher = WLAN_CIPHER_SUITE_WEP40;
3448                         break;
3449                 case CIPHER_WEP104:
3450                         cipher = WLAN_CIPHER_SUITE_WEP104;
3451                         break;
3452                 case CIPHER_CCMP:
3453                         cipher = WLAN_CIPHER_SUITE_CCMP;
3454                         break;
3455                 case CIPHER_TKIP:
3456                 default:
3457                         cipher = WLAN_CIPHER_SUITE_TKIP;
3458                         break;
3459                 }
3460                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITES_PAIRWISE, cipher);
3461         }
3462
3463         if (params->group_suite != CIPHER_NONE) {
3464                 int cipher;
3465
3466                 switch (params->group_suite) {
3467                 case CIPHER_WEP40:
3468                         cipher = WLAN_CIPHER_SUITE_WEP40;
3469                         break;
3470                 case CIPHER_WEP104:
3471                         cipher = WLAN_CIPHER_SUITE_WEP104;
3472                         break;
3473                 case CIPHER_CCMP:
3474                         cipher = WLAN_CIPHER_SUITE_CCMP;
3475                         break;
3476                 case CIPHER_TKIP:
3477                 default:
3478                         cipher = WLAN_CIPHER_SUITE_TKIP;
3479                         break;
3480                 }
3481                 NLA_PUT_U32(msg, NL80211_ATTR_CIPHER_SUITE_GROUP, cipher);
3482         }
3483
3484         if (params->key_mgmt_suite == KEY_MGMT_802_1X ||
3485             params->key_mgmt_suite == KEY_MGMT_PSK) {
3486                 int mgmt = WLAN_AKM_SUITE_PSK;
3487
3488                 switch (params->key_mgmt_suite) {
3489                 case KEY_MGMT_802_1X:
3490                         mgmt = WLAN_AKM_SUITE_8021X;
3491                         break;
3492                 case KEY_MGMT_PSK:
3493                 default:
3494                         mgmt = WLAN_AKM_SUITE_PSK;
3495                         break;
3496                 }
3497                 NLA_PUT_U32(msg, NL80211_ATTR_AKM_SUITES, mgmt);
3498         }
3499
3500         ret = nl80211_set_conn_keys(params, msg);
3501         if (ret)
3502                 goto nla_put_failure;
3503
3504         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3505         msg = NULL;
3506         if (ret) {
3507                 wpa_printf(MSG_DEBUG, "nl80211: MLME connect failed: ret=%d "
3508                            "(%s)", ret, strerror(-ret));
3509                 goto nla_put_failure;
3510         }
3511         ret = 0;
3512         wpa_printf(MSG_DEBUG, "nl80211: Connect request send successfully");
3513
3514 nla_put_failure:
3515         nlmsg_free(msg);
3516         return ret;
3517
3518 }
3519
3520
3521 static int wpa_driver_nl80211_associate(
3522         void *priv, struct wpa_driver_associate_params *params)
3523 {
3524         struct wpa_driver_nl80211_data *drv = priv;
3525         int ret = -1;
3526         struct nl_msg *msg;
3527
3528         if (params->mode == IEEE80211_MODE_AP)
3529                 return wpa_driver_nl80211_ap(drv, params);
3530
3531         if (params->mode == IEEE80211_MODE_IBSS)
3532                 return wpa_driver_nl80211_ibss(drv, params);
3533
3534         if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME)) {
3535                 if (wpa_driver_nl80211_set_mode(drv, params->mode) < 0)
3536                         return -1;
3537                 return wpa_driver_nl80211_connect(drv, params);
3538         }
3539
3540         drv->associated = 0;
3541
3542         msg = nlmsg_alloc();
3543         if (!msg)
3544                 return -1;
3545
3546         wpa_printf(MSG_DEBUG, "nl80211: Associate (ifindex=%d)",
3547                    drv->ifindex);
3548         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3549                     NL80211_CMD_ASSOCIATE, 0);
3550
3551         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3552         if (params->bssid) {
3553                 wpa_printf(MSG_DEBUG, "  * bssid=" MACSTR,
3554                            MAC2STR(params->bssid));
3555                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, params->bssid);
3556         }
3557         if (params->freq) {
3558                 wpa_printf(MSG_DEBUG, "  * freq=%d", params->freq);
3559                 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, params->freq);
3560                 drv->assoc_freq = params->freq;
3561         } else
3562                 drv->assoc_freq = 0;
3563         if (params->ssid) {
3564                 wpa_hexdump_ascii(MSG_DEBUG, "  * SSID",
3565                                   params->ssid, params->ssid_len);
3566                 NLA_PUT(msg, NL80211_ATTR_SSID, params->ssid_len,
3567                         params->ssid);
3568                 if (params->ssid_len > sizeof(drv->ssid))
3569                         goto nla_put_failure;
3570                 os_memcpy(drv->ssid, params->ssid, params->ssid_len);
3571                 drv->ssid_len = params->ssid_len;
3572         }
3573         wpa_hexdump(MSG_DEBUG, "  * IEs", params->wpa_ie, params->wpa_ie_len);
3574         if (params->wpa_ie)
3575                 NLA_PUT(msg, NL80211_ATTR_IE, params->wpa_ie_len,
3576                         params->wpa_ie);
3577
3578 #ifdef CONFIG_IEEE80211W
3579         if (params->mgmt_frame_protection == MGMT_FRAME_PROTECTION_REQUIRED)
3580                 NLA_PUT_U32(msg, NL80211_ATTR_USE_MFP, NL80211_MFP_REQUIRED);
3581 #endif /* CONFIG_IEEE80211W */
3582
3583         NLA_PUT_FLAG(msg, NL80211_ATTR_CONTROL_PORT);
3584
3585         if (params->prev_bssid) {
3586                 wpa_printf(MSG_DEBUG, "  * prev_bssid=" MACSTR,
3587                            MAC2STR(params->prev_bssid));
3588                 NLA_PUT(msg, NL80211_ATTR_PREV_BSSID, ETH_ALEN,
3589                         params->prev_bssid);
3590         }
3591
3592         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3593         msg = NULL;
3594         if (ret) {
3595                 wpa_printf(MSG_DEBUG, "nl80211: MLME command failed: ret=%d "
3596                            "(%s)", ret, strerror(-ret));
3597                 goto nla_put_failure;
3598         }
3599         ret = 0;
3600         wpa_printf(MSG_DEBUG, "nl80211: Association request send "
3601                    "successfully");
3602
3603 nla_put_failure:
3604         nlmsg_free(msg);
3605         return ret;
3606 }
3607
3608
3609 static int nl80211_set_mode(struct wpa_driver_nl80211_data *drv,
3610                             int ifindex, int mode)
3611 {
3612         struct nl_msg *msg;
3613         int ret = -ENOBUFS;
3614
3615         msg = nlmsg_alloc();
3616         if (!msg)
3617                 return -ENOMEM;
3618
3619         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3620                     0, NL80211_CMD_SET_INTERFACE, 0);
3621         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, ifindex);
3622         NLA_PUT_U32(msg, NL80211_ATTR_IFTYPE, mode);
3623
3624         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3625         if (!ret)
3626                 return 0;
3627 nla_put_failure:
3628         wpa_printf(MSG_DEBUG, "nl80211: Failed to set interface %d to mode %d:"
3629                    " %d (%s)", ifindex, mode, ret, strerror(-ret));
3630         return ret;
3631 }
3632
3633
3634 static int wpa_driver_nl80211_set_mode(void *priv, int mode)
3635 {
3636         struct wpa_driver_nl80211_data *drv = priv;
3637         int ret = -1;
3638         int nlmode;
3639
3640         switch (mode) {
3641         case 0:
3642                 nlmode = NL80211_IFTYPE_STATION;
3643                 break;
3644         case 1:
3645                 nlmode = NL80211_IFTYPE_ADHOC;
3646                 break;
3647         case 2:
3648                 nlmode = NL80211_IFTYPE_AP;
3649                 break;
3650         default:
3651                 return -1;
3652         }
3653
3654         if (nl80211_set_mode(drv, drv->ifindex, nlmode) == 0) {
3655                 drv->nlmode = nlmode;
3656                 ret = 0;
3657                 goto done;
3658         }
3659
3660         if (nlmode == drv->nlmode) {
3661                 wpa_printf(MSG_DEBUG, "nl80211: Interface already in "
3662                            "requested mode - ignore error");
3663                 ret = 0;
3664                 goto done; /* Already in the requested mode */
3665         }
3666
3667         /* mac80211 doesn't allow mode changes while the device is up, so
3668          * take the device down, try to set the mode again, and bring the
3669          * device back up.
3670          */
3671         if (hostapd_set_iface_flags(drv, drv->ifname, 0) == 0) {
3672                 /* Try to set the mode again while the interface is down */
3673                 ret = nl80211_set_mode(drv, drv->ifindex, nlmode);
3674                 if (hostapd_set_iface_flags(drv, drv->ifname, 1))
3675                         ret = -1;
3676         }
3677
3678         if (!ret) {
3679                 wpa_printf(MSG_DEBUG, "nl80211: Mode change succeeded while "
3680                            "interface is down");
3681                 drv->nlmode = nlmode;
3682         }
3683
3684 done:
3685         if (!ret && nlmode == NL80211_IFTYPE_AP) {
3686                 /* Setup additional AP mode functionality if needed */
3687                 if (drv->monitor_ifidx < 0 &&
3688                     nl80211_create_monitor_interface(drv))
3689                         return -1;
3690         } else if (!ret && nlmode != NL80211_IFTYPE_AP) {
3691                 /* Remove additional AP mode functionality */
3692                 nl80211_remove_monitor_interface(drv);
3693         }
3694
3695         if (ret)
3696                 wpa_printf(MSG_DEBUG, "nl80211: Interface mode change to %d "
3697                            "from %d failed", nlmode, drv->nlmode);
3698
3699         return ret;
3700 }
3701
3702
3703 static int wpa_driver_nl80211_get_capa(void *priv,
3704                                        struct wpa_driver_capa *capa)
3705 {
3706         struct wpa_driver_nl80211_data *drv = priv;
3707         if (!drv->has_capability)
3708                 return -1;
3709         os_memcpy(capa, &drv->capa, sizeof(*capa));
3710         return 0;
3711 }
3712
3713
3714 static int wpa_driver_nl80211_set_operstate(void *priv, int state)
3715 {
3716         struct wpa_driver_nl80211_data *drv = priv;
3717
3718         wpa_printf(MSG_DEBUG, "%s: operstate %d->%d (%s)",
3719                    __func__, drv->operstate, state, state ? "UP" : "DORMANT");
3720         drv->operstate = state;
3721         return netlink_send_oper_ifla(drv->netlink, drv->ifindex, -1,
3722                                       state ? IF_OPER_UP : IF_OPER_DORMANT);
3723 }
3724
3725
3726 static int wpa_driver_nl80211_set_supp_port(void *priv, int authorized)
3727 {
3728         struct wpa_driver_nl80211_data *drv = priv;
3729         struct nl_msg *msg;
3730         struct nl80211_sta_flag_update upd;
3731
3732         msg = nlmsg_alloc();
3733         if (!msg)
3734                 return -ENOMEM;
3735
3736         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3737                     0, NL80211_CMD_SET_STATION, 0);
3738
3739         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
3740                     if_nametoindex(drv->ifname));
3741         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid);
3742
3743         os_memset(&upd, 0, sizeof(upd));
3744         upd.mask = BIT(NL80211_STA_FLAG_AUTHORIZED);
3745         if (authorized)
3746                 upd.set = BIT(NL80211_STA_FLAG_AUTHORIZED);
3747         NLA_PUT(msg, NL80211_ATTR_STA_FLAGS2, sizeof(upd), &upd);
3748
3749         return send_and_recv_msgs(drv, msg, NULL, NULL);
3750  nla_put_failure:
3751         return -ENOBUFS;
3752 }
3753
3754
3755 #ifdef HOSTAPD
3756
3757 static struct i802_bss * get_bss(struct wpa_driver_nl80211_data *drv,
3758                                  int ifindex)
3759 {
3760         struct i802_bss *bss = &drv->bss;
3761         while (bss) {
3762                 if (ifindex == bss->ifindex)
3763                         return bss;
3764                 bss = bss->next;
3765         }
3766         wpa_printf(MSG_DEBUG, "nl80211: get_bss(%d) failed", ifindex);
3767         return NULL;
3768 }
3769
3770
3771 static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3772 {
3773         int i;
3774         int *old;
3775
3776         wpa_printf(MSG_DEBUG, "nl80211: Add own interface ifindex %d",
3777                    ifidx);
3778         for (i = 0; i < drv->num_if_indices; i++) {
3779                 if (drv->if_indices[i] == 0) {
3780                         drv->if_indices[i] = ifidx;
3781                         return;
3782                 }
3783         }
3784
3785         if (drv->if_indices != drv->default_if_indices)
3786                 old = drv->if_indices;
3787         else
3788                 old = NULL;
3789
3790         drv->if_indices = os_realloc(old,
3791                                      sizeof(int) * (drv->num_if_indices + 1));
3792         if (!drv->if_indices) {
3793                 if (!old)
3794                         drv->if_indices = drv->default_if_indices;
3795                 else
3796                         drv->if_indices = old;
3797                 wpa_printf(MSG_ERROR, "Failed to reallocate memory for "
3798                            "interfaces");
3799                 wpa_printf(MSG_ERROR, "Ignoring EAPOL on interface %d", ifidx);
3800                 return;
3801         }
3802         drv->if_indices[drv->num_if_indices] = ifidx;
3803         drv->num_if_indices++;
3804 }
3805
3806
3807 static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3808 {
3809         int i;
3810
3811         for (i = 0; i < drv->num_if_indices; i++) {
3812                 if (drv->if_indices[i] == ifidx) {
3813                         drv->if_indices[i] = 0;
3814                         break;
3815                 }
3816         }
3817 }
3818
3819
3820 static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx)
3821 {
3822         int i;
3823
3824         for (i = 0; i < drv->num_if_indices; i++)
3825                 if (drv->if_indices[i] == ifidx)
3826                         return 1;
3827
3828         return 0;
3829 }
3830
3831
3832 static inline int min_int(int a, int b)
3833 {
3834         if (a < b)
3835                 return a;
3836         return b;
3837 }
3838
3839
3840 static int get_key_handler(struct nl_msg *msg, void *arg)
3841 {
3842         struct nlattr *tb[NL80211_ATTR_MAX + 1];
3843         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
3844
3845         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
3846                   genlmsg_attrlen(gnlh, 0), NULL);
3847
3848         /*
3849          * TODO: validate the key index and mac address!
3850          * Otherwise, there's a race condition as soon as
3851          * the kernel starts sending key notifications.
3852          */
3853
3854         if (tb[NL80211_ATTR_KEY_SEQ])
3855                 memcpy(arg, nla_data(tb[NL80211_ATTR_KEY_SEQ]),
3856                        min_int(nla_len(tb[NL80211_ATTR_KEY_SEQ]), 6));
3857         return NL_SKIP;
3858 }
3859
3860
3861 static int i802_get_seqnum(const char *iface, void *priv, const u8 *addr,
3862                            int idx, u8 *seq)
3863 {
3864         struct wpa_driver_nl80211_data *drv = priv;
3865         struct nl_msg *msg;
3866
3867         msg = nlmsg_alloc();
3868         if (!msg)
3869                 return -ENOMEM;
3870
3871         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3872                     0, NL80211_CMD_GET_KEY, 0);
3873
3874         if (addr)
3875                 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
3876         NLA_PUT_U8(msg, NL80211_ATTR_KEY_IDX, idx);
3877         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(iface));
3878
3879         memset(seq, 0, 6);
3880
3881         return send_and_recv_msgs(drv, msg, get_key_handler, seq);
3882  nla_put_failure:
3883         return -ENOBUFS;
3884 }
3885
3886
3887 static int i802_set_rate_sets(void *priv, int *supp_rates, int *basic_rates,
3888                               int mode)
3889 {
3890         struct wpa_driver_nl80211_data *drv = priv;
3891         struct nl_msg *msg;
3892         u8 rates[NL80211_MAX_SUPP_RATES];
3893         u8 rates_len = 0;
3894         int i;
3895
3896         msg = nlmsg_alloc();
3897         if (!msg)
3898                 return -ENOMEM;
3899
3900         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
3901                     NL80211_CMD_SET_BSS, 0);
3902
3903         for (i = 0; i < NL80211_MAX_SUPP_RATES && basic_rates[i] >= 0; i++)
3904                 rates[rates_len++] = basic_rates[i] / 5;
3905
3906         NLA_PUT(msg, NL80211_ATTR_BSS_BASIC_RATES, rates_len, rates);
3907
3908         /* TODO: multi-BSS support */
3909         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
3910
3911         return send_and_recv_msgs(drv, msg, NULL, NULL);
3912  nla_put_failure:
3913         return -ENOBUFS;
3914 }
3915
3916
3917 /* Set kernel driver on given frequency (MHz) */
3918 static int i802_set_freq(void *priv, struct hostapd_freq_params *freq)
3919 {
3920         struct wpa_driver_nl80211_data *drv = priv;
3921         return wpa_driver_nl80211_set_freq(drv, freq->freq, freq->ht_enabled,
3922                                            freq->sec_channel_offset);
3923 }
3924
3925
3926 static int i802_set_rts(void *priv, int rts)
3927 {
3928         struct wpa_driver_nl80211_data *drv = priv;
3929         struct nl_msg *msg;
3930         int ret = -ENOBUFS;
3931         u32 val;
3932
3933         msg = nlmsg_alloc();
3934         if (!msg)
3935                 return -ENOMEM;
3936
3937         if (rts >= 2347)
3938                 val = (u32) -1;
3939         else
3940                 val = rts;
3941
3942         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3943                     0, NL80211_CMD_SET_WIPHY, 0);
3944         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3945         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, val);
3946
3947         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3948         if (!ret)
3949                 return 0;
3950 nla_put_failure:
3951         wpa_printf(MSG_DEBUG, "nl80211: Failed to set RTS threshold %d: "
3952                    "%d (%s)", rts, ret, strerror(-ret));
3953         return ret;
3954 }
3955
3956
3957 static int i802_set_frag(void *priv, int frag)
3958 {
3959         struct wpa_driver_nl80211_data *drv = priv;
3960         struct nl_msg *msg;
3961         int ret = -ENOBUFS;
3962         u32 val;
3963
3964         msg = nlmsg_alloc();
3965         if (!msg)
3966                 return -ENOMEM;
3967
3968         if (frag >= 2346)
3969                 val = (u32) -1;
3970         else
3971                 val = frag;
3972
3973         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3974                     0, NL80211_CMD_SET_WIPHY, 0);
3975         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
3976         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, val);
3977
3978         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
3979         if (!ret)
3980                 return 0;
3981 nla_put_failure:
3982         wpa_printf(MSG_DEBUG, "nl80211: Failed to set fragmentation threshold "
3983                    "%d: %d (%s)", frag, ret, strerror(-ret));
3984         return ret;
3985 }
3986
3987
3988 static int i802_flush(void *priv)
3989 {
3990         struct wpa_driver_nl80211_data *drv = priv;
3991         struct nl_msg *msg;
3992
3993         msg = nlmsg_alloc();
3994         if (!msg)
3995                 return -1;
3996
3997         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
3998                     0, NL80211_CMD_DEL_STATION, 0);
3999
4000         /*
4001          * XXX: FIX! this needs to flush all VLANs too
4002          */
4003         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4004                     if_nametoindex(drv->ifname));
4005
4006         return send_and_recv_msgs(drv, msg, NULL, NULL);
4007  nla_put_failure:
4008         return -ENOBUFS;
4009 }
4010
4011
4012 static int get_sta_handler(struct nl_msg *msg, void *arg)
4013 {
4014         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4015         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4016         struct hostap_sta_driver_data *data = arg;
4017         struct nlattr *stats[NL80211_STA_INFO_MAX + 1];
4018         static struct nla_policy stats_policy[NL80211_STA_INFO_MAX + 1] = {
4019                 [NL80211_STA_INFO_INACTIVE_TIME] = { .type = NLA_U32 },
4020                 [NL80211_STA_INFO_RX_BYTES] = { .type = NLA_U32 },
4021                 [NL80211_STA_INFO_TX_BYTES] = { .type = NLA_U32 },
4022                 [NL80211_STA_INFO_RX_PACKETS] = { .type = NLA_U32 },
4023                 [NL80211_STA_INFO_TX_PACKETS] = { .type = NLA_U32 },
4024         };
4025
4026         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4027                   genlmsg_attrlen(gnlh, 0), NULL);
4028
4029         /*
4030          * TODO: validate the interface and mac address!
4031          * Otherwise, there's a race condition as soon as
4032          * the kernel starts sending station notifications.
4033          */
4034
4035         if (!tb[NL80211_ATTR_STA_INFO]) {
4036                 wpa_printf(MSG_DEBUG, "sta stats missing!");
4037                 return NL_SKIP;
4038         }
4039         if (nla_parse_nested(stats, NL80211_STA_INFO_MAX,
4040                              tb[NL80211_ATTR_STA_INFO],
4041                              stats_policy)) {
4042                 wpa_printf(MSG_DEBUG, "failed to parse nested attributes!");
4043                 return NL_SKIP;
4044         }
4045
4046         if (stats[NL80211_STA_INFO_INACTIVE_TIME])
4047                 data->inactive_msec =
4048                         nla_get_u32(stats[NL80211_STA_INFO_INACTIVE_TIME]);
4049         if (stats[NL80211_STA_INFO_RX_BYTES])
4050                 data->rx_bytes = nla_get_u32(stats[NL80211_STA_INFO_RX_BYTES]);
4051         if (stats[NL80211_STA_INFO_TX_BYTES])
4052                 data->tx_bytes = nla_get_u32(stats[NL80211_STA_INFO_TX_BYTES]);
4053         if (stats[NL80211_STA_INFO_RX_PACKETS])
4054                 data->rx_packets =
4055                         nla_get_u32(stats[NL80211_STA_INFO_RX_PACKETS]);
4056         if (stats[NL80211_STA_INFO_TX_PACKETS])
4057                 data->tx_packets =
4058                         nla_get_u32(stats[NL80211_STA_INFO_TX_PACKETS]);
4059
4060         return NL_SKIP;
4061 }
4062
4063 static int i802_read_sta_data(void *priv, struct hostap_sta_driver_data *data,
4064                               const u8 *addr)
4065 {
4066         struct wpa_driver_nl80211_data *drv = priv;
4067         struct nl_msg *msg;
4068
4069         os_memset(data, 0, sizeof(*data));
4070         msg = nlmsg_alloc();
4071         if (!msg)
4072                 return -ENOMEM;
4073
4074         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4075                     0, NL80211_CMD_GET_STATION, 0);
4076
4077         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4078         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4079
4080         return send_and_recv_msgs(drv, msg, get_sta_handler, data);
4081  nla_put_failure:
4082         return -ENOBUFS;
4083 }
4084
4085
4086 static int i802_set_tx_queue_params(void *priv, int queue, int aifs,
4087                                     int cw_min, int cw_max, int burst_time)
4088 {
4089         struct wpa_driver_nl80211_data *drv = priv;
4090         struct nl_msg *msg;
4091         struct nlattr *txq, *params;
4092
4093         msg = nlmsg_alloc();
4094         if (!msg)
4095                 return -1;
4096
4097         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4098                     0, NL80211_CMD_SET_WIPHY, 0);
4099
4100         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4101
4102         txq = nla_nest_start(msg, NL80211_ATTR_WIPHY_TXQ_PARAMS);
4103         if (!txq)
4104                 goto nla_put_failure;
4105
4106         /* We are only sending parameters for a single TXQ at a time */
4107         params = nla_nest_start(msg, 1);
4108         if (!params)
4109                 goto nla_put_failure;
4110
4111         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_QUEUE, queue);
4112         /* Burst time is configured in units of 0.1 msec and TXOP parameter in
4113          * 32 usec, so need to convert the value here. */
4114         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_TXOP, (burst_time * 100 + 16) / 32);
4115         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMIN, cw_min);
4116         NLA_PUT_U16(msg, NL80211_TXQ_ATTR_CWMAX, cw_max);
4117         NLA_PUT_U8(msg, NL80211_TXQ_ATTR_AIFS, aifs);
4118
4119         nla_nest_end(msg, params);
4120
4121         nla_nest_end(msg, txq);
4122
4123         if (send_and_recv_msgs(drv, msg, NULL, NULL) == 0)
4124                 return 0;
4125  nla_put_failure:
4126         return -1;
4127 }
4128
4129
4130 static int i802_set_bss(void *priv, int cts, int preamble, int slot)
4131 {
4132         struct wpa_driver_nl80211_data *drv = priv;
4133         struct nl_msg *msg;
4134
4135         msg = nlmsg_alloc();
4136         if (!msg)
4137                 return -ENOMEM;
4138
4139         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4140                     NL80211_CMD_SET_BSS, 0);
4141
4142         if (cts >= 0)
4143                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_CTS_PROT, cts);
4144         if (preamble >= 0)
4145                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_PREAMBLE, preamble);
4146         if (slot >= 0)
4147                 NLA_PUT_U8(msg, NL80211_ATTR_BSS_SHORT_SLOT_TIME, slot);
4148
4149         /* TODO: multi-BSS support */
4150         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, if_nametoindex(drv->ifname));
4151
4152         return send_and_recv_msgs(drv, msg, NULL, NULL);
4153  nla_put_failure:
4154         return -ENOBUFS;
4155 }
4156
4157
4158 static int i802_set_cts_protect(void *priv, int value)
4159 {
4160         return i802_set_bss(priv, value, -1, -1);
4161 }
4162
4163
4164 static int i802_set_preamble(void *priv, int value)
4165 {
4166         return i802_set_bss(priv, -1, value, -1);
4167 }
4168
4169
4170 static int i802_set_short_slot_time(void *priv, int value)
4171 {
4172         return i802_set_bss(priv, -1, -1, value);
4173 }
4174
4175
4176 static int i802_set_sta_vlan(void *priv, const u8 *addr,
4177                              const char *ifname, int vlan_id)
4178 {
4179         struct wpa_driver_nl80211_data *drv = priv;
4180         struct nl_msg *msg;
4181
4182         msg = nlmsg_alloc();
4183         if (!msg)
4184                 return -ENOMEM;
4185
4186         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0,
4187                     0, NL80211_CMD_SET_STATION, 0);
4188
4189         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX,
4190                     if_nametoindex(drv->ifname));
4191         NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, addr);
4192         NLA_PUT_U32(msg, NL80211_ATTR_STA_VLAN,
4193                     if_nametoindex(ifname));
4194
4195         return send_and_recv_msgs(drv, msg, NULL, NULL);
4196  nla_put_failure:
4197         return -ENOBUFS;
4198 }
4199
4200
4201 static int i802_set_wds_sta(void *priv, const u8 *addr, int aid, int val)
4202 {
4203         struct wpa_driver_nl80211_data *drv = priv;
4204         char name[16];
4205
4206         os_snprintf(name, sizeof(name), "%s.sta%d", drv->ifname, aid);
4207         if (val) {
4208                 if (nl80211_create_iface(priv, name, NL80211_IFTYPE_AP_VLAN,
4209                                          NULL, 1) < 0)
4210                         return -1;
4211                 hostapd_set_iface_flags(drv, name, 1);
4212                 return i802_set_sta_vlan(priv, addr, name, 0);
4213         } else {
4214                 i802_set_sta_vlan(priv, addr, drv->ifname, 0);
4215                 return wpa_driver_nl80211_if_remove(priv, WPA_IF_AP_VLAN,
4216                                                     name);
4217         }
4218 }
4219
4220
4221 static void handle_eapol(int sock, void *eloop_ctx, void *sock_ctx)
4222 {
4223         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4224         struct sockaddr_ll lladdr;
4225         unsigned char buf[3000];
4226         int len;
4227         socklen_t fromlen = sizeof(lladdr);
4228
4229         len = recvfrom(sock, buf, sizeof(buf), 0,
4230                        (struct sockaddr *)&lladdr, &fromlen);
4231         if (len < 0) {
4232                 perror("recv");
4233                 return;
4234         }
4235
4236         if (have_ifidx(drv, lladdr.sll_ifindex)) {
4237                 void *ctx;
4238                 ctx = hostapd_sta_get_bss(drv->ctx, lladdr.sll_addr);
4239                 if (!ctx)
4240                         return;
4241                 hostapd_eapol_receive(ctx, lladdr.sll_addr, buf, len);
4242         }
4243 }
4244
4245
4246 static int i802_get_inact_sec(void *priv, const u8 *addr)
4247 {
4248         struct hostap_sta_driver_data data;
4249         int ret;
4250
4251         data.inactive_msec = (unsigned long) -1;
4252         ret = i802_read_sta_data(priv, &data, addr);
4253         if (ret || data.inactive_msec == (unsigned long) -1)
4254                 return -1;
4255         return data.inactive_msec / 1000;
4256 }
4257
4258
4259 static int i802_sta_clear_stats(void *priv, const u8 *addr)
4260 {
4261 #if 0
4262         /* TODO */
4263 #endif
4264         return 0;
4265 }
4266
4267
4268 static int i802_sta_deauth(void *priv, const u8 *own_addr, const u8 *addr,
4269                            int reason)
4270 {
4271         struct wpa_driver_nl80211_data *drv = priv;
4272         struct ieee80211_mgmt mgmt;
4273
4274         memset(&mgmt, 0, sizeof(mgmt));
4275         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4276                                           WLAN_FC_STYPE_DEAUTH);
4277         memcpy(mgmt.da, addr, ETH_ALEN);
4278         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4279         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4280         mgmt.u.deauth.reason_code = host_to_le16(reason);
4281         return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4282                                             IEEE80211_HDRLEN +
4283                                             sizeof(mgmt.u.deauth));
4284 }
4285
4286
4287 static int i802_sta_disassoc(void *priv, const u8 *own_addr, const u8 *addr,
4288                              int reason)
4289 {
4290         struct wpa_driver_nl80211_data *drv = priv;
4291         struct ieee80211_mgmt mgmt;
4292
4293         memset(&mgmt, 0, sizeof(mgmt));
4294         mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
4295                                           WLAN_FC_STYPE_DISASSOC);
4296         memcpy(mgmt.da, addr, ETH_ALEN);
4297         memcpy(mgmt.sa, own_addr, ETH_ALEN);
4298         memcpy(mgmt.bssid, own_addr, ETH_ALEN);
4299         mgmt.u.disassoc.reason_code = host_to_le16(reason);
4300         return wpa_driver_nl80211_send_mlme(drv, (u8 *) &mgmt,
4301                                             IEEE80211_HDRLEN +
4302                                             sizeof(mgmt.u.disassoc));
4303 }
4304
4305
4306 static void *i802_init(struct hostapd_data *hapd,
4307                        struct wpa_init_params *params)
4308 {
4309         struct wpa_driver_nl80211_data *drv;
4310         size_t i;
4311
4312         drv = wpa_driver_nl80211_init(hapd, params->ifname);
4313         if (drv == NULL)
4314                 return NULL;
4315
4316         drv->bss.ifindex = drv->ifindex;
4317
4318         drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int);
4319         drv->if_indices = drv->default_if_indices;
4320         for (i = 0; i < params->num_bridge; i++) {
4321                 if (params->bridge[i])
4322                         add_ifidx(drv, if_nametoindex(params->bridge[i]));
4323         }
4324
4325         /* start listening for EAPOL on the default AP interface */
4326         add_ifidx(drv, drv->ifindex);
4327
4328         if (hostapd_set_iface_flags(drv, drv->ifname, 0))
4329                 goto failed;
4330
4331         if (params->bssid) {
4332                 if (set_ifhwaddr(drv, drv->ifname, params->bssid))
4333                         goto failed;
4334         }
4335
4336         if (wpa_driver_nl80211_set_mode(drv, IEEE80211_MODE_AP)) {
4337                 wpa_printf(MSG_ERROR, "nl80211: Failed to set interface %s "
4338                            "into AP mode", drv->ifname);
4339                 goto failed;
4340         }
4341
4342         if (hostapd_set_iface_flags(drv, drv->ifname, 1))
4343                 goto failed;
4344
4345         drv->eapol_sock = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_PAE));
4346         if (drv->eapol_sock < 0) {
4347                 perror("socket(PF_PACKET, SOCK_DGRAM, ETH_P_PAE)");
4348                 goto failed;
4349         }
4350
4351         if (eloop_register_read_sock(drv->eapol_sock, handle_eapol, drv, NULL))
4352         {
4353                 printf("Could not register read socket for eapol\n");
4354                 goto failed;
4355         }
4356
4357         if (get_ifhwaddr(drv, drv->ifname, params->own_addr))
4358                 goto failed;
4359
4360         return drv;
4361
4362 failed:
4363         nl80211_remove_monitor_interface(drv);
4364         if (drv->ioctl_sock >= 0)
4365                 close(drv->ioctl_sock);
4366
4367         genl_family_put(drv->nl80211);
4368         nl_cache_free(drv->nl_cache);
4369         nl_handle_destroy(drv->nl_handle);
4370         nl_cb_put(drv->nl_cb);
4371
4372         os_free(drv);
4373         return NULL;
4374 }
4375
4376
4377 static void i802_deinit(void *priv)
4378 {
4379         wpa_driver_nl80211_deinit(priv);
4380 }
4381
4382 #endif /* HOSTAPD */
4383
4384
4385 static enum nl80211_iftype wpa_driver_nl80211_if_type(
4386         enum wpa_driver_if_type type)
4387 {
4388         switch (type) {
4389         case WPA_IF_STATION:
4390                 return NL80211_IFTYPE_STATION;
4391         case WPA_IF_AP_VLAN:
4392                 return NL80211_IFTYPE_AP_VLAN;
4393         case WPA_IF_AP_BSS:
4394                 return NL80211_IFTYPE_AP;
4395         }
4396         return -1;
4397 }
4398
4399
4400 static int wpa_driver_nl80211_if_add(const char *iface, void *priv,
4401                                      enum wpa_driver_if_type type,
4402                                      const char *ifname, const u8 *addr,
4403                                      void *bss_ctx)
4404 {
4405         struct wpa_driver_nl80211_data *drv = priv;
4406         int ifidx;
4407 #ifdef HOSTAPD
4408         struct i802_bss *bss = NULL;
4409
4410         if (type == WPA_IF_AP_BSS) {
4411                 bss = os_zalloc(sizeof(*bss));
4412                 if (bss == NULL)
4413                         return -1;
4414         }
4415 #endif /* HOSTAPD */
4416
4417         ifidx = nl80211_create_iface(drv, ifname,
4418                                      wpa_driver_nl80211_if_type(type), addr,
4419                                      0);
4420         if (ifidx < 0) {
4421 #ifdef HOSTAPD
4422                 os_free(bss);
4423 #endif /* HOSTAPD */
4424                 return -1;
4425         }
4426
4427 #ifdef HOSTAPD
4428         if (type == WPA_IF_AP_BSS) {
4429                 if (hostapd_set_iface_flags(priv, ifname, 1)) {
4430                         nl80211_remove_iface(priv, ifidx);
4431                         os_free(bss);
4432                         return -1;
4433                 }
4434                 bss->ifindex = ifidx;
4435                 bss->next = drv->bss.next;
4436                 drv->bss.next = bss;
4437         }
4438 #endif /* HOSTAPD */
4439
4440         return 0;
4441 }
4442
4443
4444 static int wpa_driver_nl80211_if_remove(void *priv,
4445                                         enum wpa_driver_if_type type,
4446                                         const char *ifname)
4447 {
4448         struct wpa_driver_nl80211_data *drv = priv;
4449         int ifindex = if_nametoindex(ifname);
4450
4451         nl80211_remove_iface(drv, ifindex);
4452
4453 #ifdef HOSTAPD
4454         if (type == WPA_IF_AP_BSS) {
4455                 struct i802_bss *bss, *prev;
4456                 prev = &drv->bss;
4457                 bss = drv->bss.next;
4458                 while (bss) {
4459                         if (ifindex == bss->ifindex) {
4460                                 prev->next = bss->next;
4461                                 os_free(bss);
4462                                 break;
4463                         }
4464                         prev = bss;
4465                         bss = bss->next;
4466                 }
4467         }
4468 #endif /* HOSTAPD */
4469
4470         return 0;
4471 }
4472
4473
4474 static int cookie_handler(struct nl_msg *msg, void *arg)
4475 {
4476         struct nlattr *tb[NL80211_ATTR_MAX + 1];
4477         struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
4478         u64 *cookie = arg;
4479         nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0),
4480                   genlmsg_attrlen(gnlh, 0), NULL);
4481         if (tb[NL80211_ATTR_COOKIE])
4482                 *cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]);
4483         return NL_SKIP;
4484 }
4485
4486
4487 static int wpa_driver_nl80211_remain_on_channel(void *priv, unsigned int freq,
4488                                                 unsigned int duration)
4489 {
4490         struct wpa_driver_nl80211_data *drv = priv;
4491         struct nl_msg *msg;
4492         int ret;
4493         u64 cookie;
4494
4495         msg = nlmsg_alloc();
4496         if (!msg)
4497                 return -1;
4498
4499         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4500                     NL80211_CMD_REMAIN_ON_CHANNEL, 0);
4501
4502         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4503         NLA_PUT_U32(msg, NL80211_ATTR_WIPHY_FREQ, freq);
4504         NLA_PUT_U32(msg, NL80211_ATTR_DURATION, duration);
4505
4506         cookie = 0;
4507         ret = send_and_recv_msgs(drv, msg, cookie_handler, &cookie);
4508         if (ret == 0) {
4509                 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel cookie "
4510                            "0x%llx for freq=%u MHz duration=%u",
4511                            (long long unsigned int) cookie, freq, duration);
4512                 drv->remain_on_chan_cookie = cookie;
4513                 return 0;
4514         }
4515         wpa_printf(MSG_DEBUG, "nl80211: Failed to request remain-on-channel "
4516                    "(freq=%d): %d (%s)", freq, ret, strerror(-ret));
4517 nla_put_failure:
4518         return -1;
4519 }
4520
4521
4522 static int wpa_driver_nl80211_cancel_remain_on_channel(void *priv)
4523 {
4524         struct wpa_driver_nl80211_data *drv = priv;
4525         struct nl_msg *msg;
4526         int ret;
4527
4528         if (!drv->pending_remain_on_chan) {
4529                 wpa_printf(MSG_DEBUG, "nl80211: No pending remain-on-channel "
4530                            "to cancel");
4531                 return -1;
4532         }
4533
4534         wpa_printf(MSG_DEBUG, "nl80211: Cancel remain-on-channel with cookie "
4535                    "0x%llx",
4536                    (long long unsigned int) drv->remain_on_chan_cookie);
4537
4538         msg = nlmsg_alloc();
4539         if (!msg)
4540                 return -1;
4541
4542         genlmsg_put(msg, 0, 0, genl_family_get_id(drv->nl80211), 0, 0,
4543                     NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 0);
4544
4545         NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex);
4546         NLA_PUT_U64(msg, NL80211_ATTR_COOKIE, drv->remain_on_chan_cookie);
4547
4548         ret = send_and_recv_msgs(drv, msg, NULL, NULL);
4549         if (ret == 0)
4550                 return 0;
4551         wpa_printf(MSG_DEBUG, "nl80211: Failed to cancel remain-on-channel: "
4552                    "%d (%s)", ret, strerror(-ret));
4553 nla_put_failure:
4554         return -1;
4555 }
4556
4557
4558 static void wpa_driver_nl80211_probe_req_report_timeout(void *eloop_ctx,
4559                                                         void *timeout_ctx)
4560 {
4561         struct wpa_driver_nl80211_data *drv = eloop_ctx;
4562         if (drv->monitor_ifidx < 0)
4563                 return; /* monitor interface already removed */
4564
4565         if (drv->nlmode != NL80211_IFTYPE_STATION)
4566                 return; /* not in station mode anymore */
4567
4568         if (drv->probe_req_report)
4569                 return; /* reporting enabled */
4570
4571         wpa_printf(MSG_DEBUG, "nl80211: Remove monitor interface due to no "
4572                    "Probe Request reporting needed anymore");
4573         nl80211_remove_monitor_interface(drv);
4574 }
4575
4576
4577 static int wpa_driver_nl80211_probe_req_report(void *priv, int report)
4578 {
4579         struct wpa_driver_nl80211_data *drv = priv;
4580
4581         if (drv->nlmode != NL80211_IFTYPE_STATION) {
4582                 wpa_printf(MSG_DEBUG, "nl80211: probe_req_report control only "
4583                            "allowed in station mode (iftype=%d)",
4584                            drv->nlmode);
4585                 return -1;
4586         }
4587         drv->probe_req_report = report;
4588
4589         if (report) {
4590                 eloop_cancel_timeout(
4591                         wpa_driver_nl80211_probe_req_report_timeout,
4592                         drv, NULL);
4593                 if (drv->monitor_ifidx < 0 &&
4594                     nl80211_create_monitor_interface(drv))
4595                         return -1;
4596         } else {
4597                 /*
4598                  * It takes a while to remove the monitor interface, so try to
4599                  * avoid doing this if it is needed again shortly. Instead,
4600                  * schedule the interface to be removed later if no need for it
4601                  * is seen.
4602                  */
4603                 wpa_printf(MSG_DEBUG, "nl80211: Scheduling monitor interface "
4604                            "to be removed after 10 seconds of no use");
4605                 eloop_register_timeout(
4606                         10, 0, wpa_driver_nl80211_probe_req_report_timeout,
4607                         drv, NULL);
4608         }
4609
4610         return 0;
4611 }
4612
4613
4614 static int wpa_driver_nl80211_alloc_interface_addr(void *priv, u8 *addr)
4615 {
4616         struct wpa_driver_nl80211_data *drv = priv;
4617
4618         if (get_ifhwaddr(drv, drv->ifname, addr) < 0)
4619                 return -1;
4620
4621         if (addr[0] & 0x02) {
4622                 /* TODO: add support for generating multiple addresses */
4623                 addr[0] ^= 0x80;
4624         } else
4625                 addr[0] = 0x02; /* locally administered */
4626
4627         return 0;
4628 }
4629
4630
4631 static void wpa_driver_nl80211_release_interface_addr(void *priv,
4632                                                       const u8 *addr)
4633 {
4634         /* TODO: keep list of allocated address and release them here */
4635 }
4636
4637
4638 const struct wpa_driver_ops wpa_driver_nl80211_ops = {
4639         .name = "nl80211",
4640         .desc = "Linux nl80211/cfg80211",
4641         .get_bssid = wpa_driver_nl80211_get_bssid,
4642         .get_ssid = wpa_driver_nl80211_get_ssid,
4643         .set_key = wpa_driver_nl80211_set_key,
4644         .scan2 = wpa_driver_nl80211_scan,
4645         .get_scan_results2 = wpa_driver_nl80211_get_scan_results,
4646         .deauthenticate = wpa_driver_nl80211_deauthenticate,
4647         .disassociate = wpa_driver_nl80211_disassociate,
4648         .authenticate = wpa_driver_nl80211_authenticate,
4649         .associate = wpa_driver_nl80211_associate,
4650         .init = wpa_driver_nl80211_init,
4651         .deinit = wpa_driver_nl80211_deinit,
4652         .get_capa = wpa_driver_nl80211_get_capa,
4653         .set_operstate = wpa_driver_nl80211_set_operstate,
4654         .set_supp_port = wpa_driver_nl80211_set_supp_port,
4655         .set_country = wpa_driver_nl80211_set_country,
4656         .set_beacon = wpa_driver_nl80211_set_beacon,
4657         .if_add = wpa_driver_nl80211_if_add,
4658         .if_remove = wpa_driver_nl80211_if_remove,
4659         .send_mlme = wpa_driver_nl80211_send_mlme,
4660         .get_hw_feature_data = wpa_driver_nl80211_get_hw_feature_data,
4661         .sta_add = wpa_driver_nl80211_sta_add,
4662         .sta_remove = wpa_driver_nl80211_sta_remove,
4663         .hapd_send_eapol = wpa_driver_nl80211_hapd_send_eapol,
4664         .sta_set_flags = wpa_driver_nl80211_sta_set_flags,
4665 #ifdef HOSTAPD
4666         .hapd_init = i802_init,
4667         .hapd_deinit = i802_deinit,
4668         .get_seqnum = i802_get_seqnum,
4669         .flush = i802_flush,
4670         .read_sta_data = i802_read_sta_data,
4671         .sta_deauth = i802_sta_deauth,
4672         .sta_disassoc = i802_sta_disassoc,
4673         .get_inact_sec = i802_get_inact_sec,
4674         .sta_clear_stats = i802_sta_clear_stats,
4675         .set_freq = i802_set_freq,
4676         .set_rts = i802_set_rts,
4677         .set_frag = i802_set_frag,
4678         .set_rate_sets = i802_set_rate_sets,
4679         .set_cts_protect = i802_set_cts_protect,
4680         .set_preamble = i802_set_preamble,
4681         .set_short_slot_time = i802_set_short_slot_time,
4682         .set_tx_queue_params = i802_set_tx_queue_params,
4683         .set_sta_vlan = i802_set_sta_vlan,
4684         .set_wds_sta = i802_set_wds_sta,
4685 #endif /* HOSTAPD */
4686         .remain_on_channel = wpa_driver_nl80211_remain_on_channel,
4687         .cancel_remain_on_channel =
4688         wpa_driver_nl80211_cancel_remain_on_channel,
4689         .probe_req_report = wpa_driver_nl80211_probe_req_report,
4690         .alloc_interface_addr = wpa_driver_nl80211_alloc_interface_addr,
4691         .release_interface_addr = wpa_driver_nl80211_release_interface_addr,
4692 };